EPDM seal is widely used

According, to identify quality wooden doors, the first tap, weigh approaches are generally divided into the gate of the solid filler and some solid, solid filler certain weight, the price also expensive, and some solid relatively light, the price relatively cheap. But there are some sinister business of some scraps as filler to increase the weight, so as a consumer, or to develop the habit of buying branded products. Security seals
The second way is to observe recognition "seal." "Seal" is directly related to the density of the door. Seal of "hiding" in the door pocket and door contact part, feels relatively soft. Formal enterprises will add seals, thus avoiding the seam after closing there is always a problem.
The third is the Door of the material. Reporters learned that most of the complaints were mainly about the doors Door out of the question. Essence of the problem is that the businesses will not necessarily use the same door pocket and door material, solid wood doors with solid wood Door does not mean that it will. If you do a solid wood door with MDF Door, because it does not contain wood fibers, water prone to foaming, can cause deformation of the door frame, so the best time of purchase ask whether the merchant Door and door of a material. numbered seals

Performance sponge seal

EPDM sponge seal, foam seal widely used in automotive sealing strip, rubber hose, steel doors and windows sealed, aluminum doors and windows sealed, the roof membrane and cable industry, the most widely used non-tire elastomer. truck sealManufacturer's investment in the EPDM is continuing to increase. In recent years, ethylene propylene rubber seal in the drinking water and wastewater products, engine mounts and window weatherstripping on the application of new progress. In addition, the EPDM TPV containing the market demand is relatively large.
Currently, the global demand for EPDM than 900 000 t, 2005 grew to 100 million t. Many in the industry have started to pay attention to the market is already completely saturated. Active in this field since most experts no longer regard as a special EPDM rubber, so its application areas there are many possibilities of development. In research and development applications in EPR efforts, has gradually exceeded such as polyethylene and other products. Automotive and EPDM supplier is to promote a major driving force for product improvement. More than 50% are derived from the demand for EPDM automotive industry, and mainly in the automotive sealing products. EPDM body sealing markets worldwide about 18 million t, which sealing products for the production of sponge about 35,000 ~ 40,000 t. Different with other fields in this area, on product performance, quality, stability, appearance and cost all have strict requirements.
Therefore, in order to seal in the automotive market success, EPDM supplier must ensure that their products are in many respects should be very out. security tie

Steel doors and windows have a good seal

Steel doors and windows in recent years for its good tightness and quickly occupied the market, and steel doors and windows sealed and become a national focus on the promotion of building materials, and its excellent sealing doors and windows sealed with plastic credit are inseparable, doors and windows to activity on both sides and bottom of the doors and windows must be no gaps, the only way to easy to open and close. . However, these gaps also makes noise, dust, stepped in, and impact on indoor thermal insulation, the formation energy waste, in general, the gap through the house windows and doors building a total amount of heat is usually about 12% of heat loss. Thus, a good seal on the doors and windows a great influence on the quality, the sky's the main seal sealing strip is particularly critical, its quality directly determines the merits of the quality windows and doors. tamper seals
China is now widely used seals are nitrile rubber (NBR) and polyvinyl chloride (PVC) blend made of PVC, which both ozone resistance and oil resistance of NBR and cross-linking, has good physical mechanical properties, its main source of raw material PVC-rich, low prices, it has widespread applications. By working in different ways, sealing strips can be divided into two kinds of silicified and non-silicified, GB GB12002-89 for plastic door and window seals to make a more detailed set of quality standards for referrals. Silicified seal is used over oil-treated polypropylene yarn manufactured after treated with silicone oil seal waterproof doors and windows can significantly improve performance, while aging resistance, flexibility, lodging resistance has a significant increase. In the industry standard JC/T635-1995 made it clear seal must be siliconized.
Seal root is a plastic substrate, and its aging resistance, low temperature brittleness also need the right formula and quality raw materials to ensure that, otherwise it will directly affect the seal life. If both sides of the base plate on the addition of the sealing flap side down easily, can improve the sealing performance of the sealing strip as a whole, extending its life, and in the assembly process to reduce hair seal groove and seal profiles catching phenomenon.
Structurally sealing strip can be divided into common type and intermediate sandwich type. On the basis of the latter in the former, an increase in the middle of the sealing hair a siliconized polyethylene film or a nonwoven fabric to completely hermetically sealed air flow gap between the hair, so that the sealing interlayer seal seals better than 5 times normal above. With its windows and doors made of air permeability can reach the highest national level standards. security tie
Because plastic doors and windows is the result of the overall welding, seal damaged can not be replaced, so the seal windows and doors directly affect the life of a whole life. From the above analysis, we can see both sides and there is silicified laminated seal flap sealing performance, life is much better than the low-grade sealing strip (low seal life of three to five years, high-grade seal service life 20 ~ 30 years), but its price is higher than the low-grade seals (seal low priced at 0.16 yuan / m, while the high price of 0.8 yuan seal / m). Although the seal only 2% of the cost of the entire plastic window, plastic window industry, but because of intense competition, 90% of domestic enterprises is not high quality seal, door seal material currently on the market, plasticized PVC sealing strip material share of 90%, while the industry authorities recommend using a modified high degree of polymerization of PVC and thermoplastic elastomer sealing strip market share is very low.

Silicone foam seal recipe ingredients detection

Micro-spectrum chemical formulations to provide analysis of silicone foam seal, silicone foam seal component detection, performance improvements save expenses and shorten the production development cycle, resolve product quality issues.
The main provider of silicone formulation analysis, silicone foam seal component testing, provide rubber elongation, tear strength, aging resistance, resolve sticky roller, spray frost, curing time is not ideal problem, unknown analysis, industrial diagnosis.metal cable ties
Silicone foam seal component detection process: After the separation through the evaluation sample, sample preparation, instrumental analysis, spectrum analysis, secondary verification five steps, using NMR analysis, X fluorescence spectroscopy, IR, GC-MS analysis method combined with measuring instruments, precision spectra obtained structure, to understand recipe ingredients to help you understand the product material.
Micro-Spectral Analysis Significance:
[Material Analysis]: who does not know the silicone samples, identification of the type of rubber, to provide material laboratory reports, using a short time, low cost of testing, the results quasi-
[Recipe Analysis]: detection equipment through a large sample formula that combines standard spectrum, reducing plastic formulations by industry experts, and provide raw material options
[Product Modification]: according to the supply of the sample to improve the performance, or to provide performance parameters according to design products, such as elongation, tear strength, aging resistance, etc.
[Quality Diagnosis: solve product quality problems, such as sticky roller, spray frost, curing time is not satisfactory and so on, as well as aid from the sample components to add perspective to solve the problem
Micro-spectrum chemical advantages:self-locking cable ties
A, NMR analysis, GC-MS analysis, infrared spectroscopy, GC-MS analysis, X fluorescence spectra, the instrument package;
Second, the oil sits experienced experts, formulation analysis accuracy;
Three, CMA certification, the industry's leading authority on the analysis of industry leaders
So far, nearly ten thousand micro-spectrum formula to help our clients analyze business, R & D silicone foam seal formulations.

Damping seal doors and windows

The main role of dust, insects, water, noise and sealing. Steel doors and windows on the market are generally sealing strip PVC, EPDM,barrier seals
Elastomer sealing strip (including TPV, TPE, TPR, SEBS) and other material extruded to form.
Windows seal the purposes into the glass sealing strip (strip) and two tops, glass sealing strip for glass and fan and a housing seal between the tops primarily for sealing between the frame and the fan.
Sealing strip, generally used in peaceful open hanging on the window casement windows and casement and sash windows and other windows-type seal between sash and glass; sealing tops, generally used in sliding the seal between the fan and the fan , dustproof effect.
In the steel doors and windows and aluminum doors and windows broken bridge production and installation, the sealing strip is an essential accessory.
Domestic doors and windows sealed before the classification
First, the rubber seal (also known as the modified rubber seal, PVC sealing strip).vehicle cargo seal
Second, ethylene propylene diene monomer (EPDM) seal.
Third, the elastomer sealing strip (including TPV, TPE, TPR, SEBS and other types.

Seal doors and windows Installation Precautions

Glass installation is not centered, glass sash gap with uneven rubber seal is not close to the glass and window frames, installation is not flat. Hand to knock the glass, loose sound.tamper evident tape
Reasons for this situation:
An installation of glass without the timely removal of debris inside the notch, notch the glass and misalignment.
Two glass with glass notch uneven gaps, rubber and glass tank is bad, protruding notch glass, hand seals can be easily pulled off.
3 rubber strip around the corner is not disconnected, do not inject adhesive junction.
Corrective measures are:
1 carefully before installing the glass clear notch within the debris, such as mortar, brick dust, wood, etc., should be carefully placed on the glass, ensuring that both sides of the gap is uniform, and timely than being fixed to prevent collision shift deviation notch center.
2. Rubber seal can not pull too tight, cutting length than the length of a long assembly 2O-3Omm. Should be installed mosaic in place, flat surfaces, and glass notch close contact with the glass surrounding the force evenly. Rubber strip around the corner should be beveled off and disconnect the injection of glue at the firm.
3 with fixed glass sealant caulk, you should use rubber or rubber block glass choked, leaving voids dispensing, dispensing depth should not be less than 5mm, the gel before curing, the glass should be kept free from vibration.plastic seals

How to distinguish between true and false doors and windows sealed

With a variety of petrochemical products prices continue to rise, some irresponsible manufacturers began aspects of unfair competition from the raw material (the so-called shoddy, shoddy).
Actual key is sealed windows and doors, sealing quality seal plays an important role. The seal material used market generally for modifying PVC, soft PVC in a key role in its inside adding a plasticizer which is nothing more than the quality, the relatively stable plasticizers are dioctyl phthalate butter, two small fat. But now the market price is high, some unscrupulous traders are using some other cheap stuff instead of (waste oil, oil refineries remaining foundation, etc.) to consumers is a big risk.rail car seals

Its products symptoms:

1. Permeability surface precipitation phenomena occur, those fundamental and PVC waste oil is not compatible solution, seal surface is prone to grease the surface of the profile also infected with yellow marks. Do not even have a lot of environmental volatile substances, air pollution.

2. When the so-called volatile or plasticizer exudation after the seal will lose its original softness, becomes hard, and soon aging of contraction, so that a part of the closed doors there was a great gap becomes airtight poorly (leakage, leakage of dust) in particular, steel doors and windows will soon be inside the steel liner corrosion, there are many users often find inside from the window in the rainy season layering parts out a lot of red liquid dirty, leaking windows and doors that had lined long been corrosion, doors and windows of life will be greatly reduced.ss cable ties

In the production process, the sealing strip investment accounted for a small proportion, but its role has not be ignored.

Doors and windows sealed its identification method is very simple

One, with the smell whether there is odor, normal PVC material will be a little son alcohol taste, smell almost minimal.vehicle cargo seal

Second, try to seal tightly wrapped around the profile, and a period of time at a high temperature (on the roof or sunny places). See profile surface and seal contact surfaces if there is defaced discoloration of the surface of the dust seal is yellow (with oil is very easy to suck soil) permeability, whether left the dirty hands.

Third, some of the cheaper prices will be a lot of filler seal, so the surface will not be very bright, those very cheap look very bright undesirable.
Fourth, look at the proportion of how much energy per kilogram of rice. There are many unscrupulous traders, large areas in the use of fillers tricks, some manufacturers for the pursuit of greater yields, (save a little electricity) using talcum powder, TSP do things like fillers, greatly increasing the proportion of seal products , so that virtually but increased costs outweigh the benefits. Add TSP seal, you hand stretch the back and forth several times, the surface will be a small amount of a white powder.Indicative Seals

Different seal doors and windows where the applicable

In developed countries, despite the balcony tightly constructed, fabrication and installation of high precision, safety is still on the balcony with seal. The production of a variety of seal products, for different occasions. Some soft rubber sheets, some use foam tape, and some chemical fibers and composites made of hard plastic, and its flexibility and durability are good. Some sealing method using extrusion seals, and some with a brush Wiping blocked.truck security seals
Some are self-adhesive fixing method can be bonded to the frame and fan themselves on; others remain embedded balcony groove; others use nails solid method. In the final analysis, the use of seal types and specifications to be the case with its own balcony to adapt in order to obtain good results. The scope of application of different seals vary, some brush or flake seal, a balcony with a nail in the seams, only for wood windows and doors; For the bottom of the door to use the brush or rubber sealing strip is good; while sealant and metal bonding properties, in 24 to 28 hours of self-coagulation, its thickness can be adjusted according to the actual need for metal balcony; some of the self-adhesive foam sealing strip can be good with a squeeze sealing method, suitable for windows made of different materials, the thickness of the door should match the width of the gap; into the trench as the brush-like or plastic seals will have the balcony with the notch.Security ties

Seal the doors and windows of the role

As people's living standards improve, the standard of living conditions are increasingly high. Seal applies not only to cars, trains, machinery, doors and windows in the application are increasingly widespread.wire seals
Seal in wooden doors, security doors, sliding doors, aluminum windows and doors and other doors various plays a key role. The most obvious is the shock, the door stop line after it installed to reduce (or even disappear) to close the door (window) when the sound of the collision, on the edge of the door leaf from a protective effect, and extend the life of the door to reduce the noise. The second is sealed, shock, isolated indoor and outdoor air, effectively acts as a thermal insulation, energy-saving effect, but will prevent mosquitoes and other small insects drill into the room.
Colorful hard and soft plastic shaped seal widely used in wood, PVC board suite doors, garage doors, automatic doors, furniture, doors, all kinds of aluminum windows and doors and other doors and windows sealed, energy saving, dust, shock, waterproof, soundproof compartment light, easing the outdoor noise, debris interference.
Reasonable design, easy to install durable, greatly improving the doors and windows of various technical indicators, is an important part of windows and doors, extended equipment, furniture and other life played an effective energy-saving environmental protection, new products.metal seal

How to use 3M double-sided adhesive sealing strip installed

1.3M double sided tape width 2.5CM, while the adhesive surface sealing strip width of about 8mm, cut 3.

2 Slowly double-sided adhesive to seal the back side first by sticking together, and then cut with scissors, cut down the side of the part no longer rely on sticky Sarkozy, left stick once again, this can take full advantage of dual- plastic surface. If the car door side seam great, and welcome pedal but not a lot, it is recommended to first do some door edge seal, so that should be able to reduce wind noise.coloured cable ties

3 Wipe the door after sticky side seal, first stick a door seal, use a little effort, then glued down along the door slowly, while double-sided adhesive sticky side torn off the protective paper, try the sealing strip stick neatly whole a good stick, and then press down again enhanced adhesion. After the good results so sticky, gooey environmental effects than much stronger.

4 Next, check the adhesion and sealing strips pulled down not at direct hand off, and only from one side when you can start tearing force to tear off, double-sided adhesive paste with the body part being torn, the other side are stuck on the seal, it appears that double-sided adhesive and the adhesion of the vehicle body and the sealing strip without the adhesion force. Remove the seal on the body after a trace and no, if you stick to the wrong position, then you can easily start over, it is recommended that you use 3M double sided tape.

5 four doors soon stick better. If you find that just closed the door side rear door sealing strips glued along with the body there are gaps, put the seal on the body along the front to the back stick along a whole, so sticky after pulled, actually, and doors sealing strip along the door seal tightly, and did not feel a storm door changed.metal cable ties

6 a vehicle generally used automotive sealing Treaty 10 m, 3M double sided tape about 3 volumes.
This bonding method should be very good, not only to ensure the construction quality, but can also be reworked sticky wrong, it is strongly recommended to everyone.

On the doors and windows sealed system, the importance of epdm seal

With the development of technology and the improvement of living standards, and the country to establish a harmonious society call for energy-efficient doors and windows as the eyes and building energy loss accounts for the loss of buildings for 40% of total energy consumption, the country has attracted enough attention, especially in the capital Beijing in 2004, the doors and windows of the heat transfer coefficient (thermal insulation index), as a mandatory acceptance criteria, in various provinces and cities also caused great concern and the implementation of energy-saving windows and doors have become the mainstream of doors and windows.tamper evident tape

Energy-saving windows and doors generally consists of profiles, hardware, glass and EPDM seal, and processing technology of several modules, seal its share of the cost is low, and some do not attach importance to the traditional concepts of energy efficiency standards for windows and doors, has been a lot of doors and windows ignored by manufacturers, but seal the doors and windows system has a crucial role, EPDM seal windows and doors systems in exactly what role do?

Seal is installed in the door frames, fan and glass, relying on EPDM possess excellent elastic properties of the profiles windows and doors, hardware, glass closely linked, as a whole, according to the design of energy-efficient windows and doors of the basic principle of equal pressure , played the role of sealing pressure to achieve the doors and windows of three standards and energy efficiency standards, to improve the air tightness of doors and windows and water tightness, sound insulation has a crucial role in making energy-efficient windows and doors windows and doors to truly become qualified.

Also now there are a lot of windows and doors industry manufacturers still do not speak the windows system's technical contact and integrity, the use of window profiles and accessories are pieced combination of materials to make itself less mating parts together, resulting in doors and windows make a good After a lot of problems and defects, or did not control the processing problems, and finally sealing strips are used to compensate for defects in the windows, in order to improve the overall performance of windows and doors, windows and doors meet energy efficiency standards, and to solve such problems, sealing strip manufacturer's product design capability and technology to produce high-capacity, low-What is critical.seal for containers

Automotive sealing composite extrusion workmanship

Currently, the auto body sealing materials commonly used in EPDM rubber (EPDM) or polyvinyl chloride (PVC). EPDM rubber (EPDM) is ethylene, propylene monomer is added small amount of non conjugated diene elastomeric polymer material formed, which structure is characterized by the molecular chains of the polymer are all unsaturated double bonds, and in the branched-chain by introducing an unsaturated double bond, which has excellent weather resistance, heat resistance, ozone resistance, UV resistance and good processability and low compression resistance, is the production of automobile sealing material of choice, generally vehicles produced using EPDM seal material life of up to ten years. PVC materials used in surface decoration is more demanding automotive seals, such as the roof trim, inner and outer window seal. With the auto industry, can be used in automotive sealing strip processing and production of new materials more and more. Wherein the thermoplastic elastomer (TPE) material is the most prominent of a new type of environmentally friendly materials, it is mainly divided polyolefin (TPV, TPO) polyurethane (TPU) polyester (TPEE): Polyvinyl Chloride (TPVC) poly amides (TPAE) and other types of thermoplastic elastomer. The seal used in automotive products mainly polyolefins (TPV, TPO) thermoplastic elastomer material, such materials and glass friction coefficient, wear resistance, can be used as automotive glass guide groove, outside door glass seal strip and part of the auxiliary seal materials. In addition, a variety of automotive sealing auxiliary materials increasingly focused on environmental requirements, such as various environmentally friendly adhesives, water-based coating materials applications.
In the automotive sealing composite extrusion process, the high degree of automation, domestic technology is relatively mature, there are many car companies can conduct business needs sealing extrusion line group line design, processing and debugging. Compared with foreign extrusion lines, the domestic production line of inexpensive production lines imported only about 1/3, the device capability index is low, the low-end models usually applied to seal products. Automotive sealing compound extrusion process of the most important parameter is the normal production of extrusion speed, this parameter is larger, the output of automotive sealing products, lower overall costs, market competitiveness is stronger. The process parameters determine the merits of the factors, in addition to complete production line equipment capabilities, suitable for high-speed extrusion materials, structures, formulation design will play a significant role in the decision. Currently, this parameter is generally divided into three grades: less than 10M/min, 10M-20M/min, greater than 20M/min. Most of the domestic automobile enterprises in 10M/min seal within a few joint ventures and Chinese-funded enterprises reached 10M-20M/min, and foreign automotive sealing business basically in 20M/min more.metal seal
After sealing strip in the car after the extrusion process, the current domestic labor costs are lower, generally low degree of automation, is a labor-intensive process. However, with the continuous development of the national economy, domestic labor costs will gradually increase, the automotive sealing enterprises will gradually introduce and develop a high degree of automation, post processing equipment.
In addition, automotive sealing strip after processing, along with the development of science and technology, has emerged a group of new technology and equipment, such as a rotary electrostatic flocking equipment appears to solve automotive sealing problems multidirectional nylon flocking fasteners automatic assembly machine to replace the traditional manual assembly fasteners way, not only can improve production efficiency and reduce the number of employment, but also to avoid the leakage fasteners installed, the wrong equipment and other quality problems occur tapered composite extrusion technology has greatly improved automotive sealing products can be installed, sealing, decorative features such as a variety of film tape (flocking band, PE hardbanding, TPV colored decorative ribbons, etc.) and automotive sealing strip continuous paste technology, not only simplifies the original production process, reduce production costs, but also extends the automotive sealing industry chain.barrier security seals

What is the dynamic sealing strip

Dynamic seals, mainly refers to the stem seal. Do not let the media inside the valve with the stem movement leakage, dynamic seal valve central topic.barrier seals
1) stuffing form
Currently, the dynamic sealing valve to stuffing based. The basic form of stuffing:
(1) Gland
This is the most used form.
The same form can distinguish many details. For example, from the bolts, it can be divided into T-shaped bolt (for pressure ≤ 16 kg / square centimeter low pressure valves), stud and eyelet bolts. From the gland, it can be divided into integral and modular.
2) compression nut type
This form, small size, but the clamping force is restricted to use only for small valves.
2) packing
Stuffing box to fill in direct contact with the valve stem and full of stuffing to prevent media leaks. On the filler has the following requirements:nylon zip ties
(1) good sealing
(2) Corrosion resistance
(3) Friction coefficient
(4) to adapt to the medium temperature and pressure.

Dynamic seal common fillers

(1) Asbestos Packing: Asbestos packing, heat and corrosion resistance are good, but when used alone, the seal ineffective, so always impregnated or attach other materials. Oil asbestos packing: its basic structure, there are two, one is twisting system, another is knitting. Can be divided into round and square.
(2) PTFE braided packing: weaving the thin strip of PTFE packing, excellent corrosion resistance, but also for cryogenic media.numbered security seals
(3) Rubber O-ring: at low pressure, good sealing effect. Restricted use of temperature, such as natural rubber can be used only 60 ℃.
(4) molded plastic packing: generally made of three-piece, can be made into other shapes. The plastic PTFE as much, but there are made of nylon 66 and nylon 1010.
In addition, the use of units according to their needs, often explore a variety of effective filler form. For example, at 250 ℃ steam valves with asbestos packing and lead laps alternately laminated, steam leakage situation will alleviate some valves, the media constantly changing, such as the asbestos packing and Teflon tape used together, sealing effect will be better. To reduce the friction of the valve stem, and some cases, can be added molybdenum disulfide (M0S2) or other lubricants.
Currently, novel filler being carried forward to exploring. For example polyacrylonitrile fiber by the PTFE latex dipping, and after pre-oxidation, the sintering pressed in a mold, excellent sealing performance can be obtained and if a molded packing made of stainless steel sheet and waveform asbestos packing, high temperature, high pressure and corrosion.
Bellows seal
As the chemical industry and the rapid development of the nuclear industry, flammable, explosive, toxic and radioactive substances has increased, the valve seals have more stringent requirements, some places have been unable to use the packing seal, resulting in a new Seal type - bellows seal. No such sealing packing, also called without packing.trailer seals
Both ends of the bellows, and other parts welded dead. When the stem down, the bellows expansion, as long as the bellows itself does not leak, the medium can not escape. For insurance purposes, often using double bellows seal with the filler.

What are wooden seal materials and chemical composition

1.PVC resin
It is the main body of sealing material, all the materials can account for 65% -75% from the conditions of use and the seal life considerations should be used in suspension polymerization of a high molecular weight resin in order to ensure adequate tensile and excellent flexibility. However, with the increase of the average molecular weight PVC resin, processability of the resin is deteriorated. Therefore, in the selection of suspension PVC resin, comprehensive consideration product performance and processing performance two factors.metal security seals

2.rubber toughening component
It is blended with PVC resin elastic material, typically accounting for 10% -15% of materials, polymer blends based on principle, to use with PVC resin solubility parameter of similar types of plastic or elastomer, such as nitrile rubber (powder like powder), chloroprene rubber, polyurethane, and ELVALOY i.e. E-VA-CO (ethylene - vinyl acetate - polar monomer terpolymer), etc. These rubber or elastic body made in PVC resin is added, not only gives seal good flexibility, can also play the role of PVC plasticizers permanently, so the cost of allowing case, consider increasing the content of the rubber composition. In the rubber toughening component antioxidant and other additives are also added to ensure there is enough product life.

3.thermal stabilization system
PVC resin is a heat-sensitive resin, the thermal stability is poor, such as the PVC resin to 100 ℃, the decomposition will generate more than 1 50 ℃, the decomposition quickly, a large amount of hydrogen chloride gas. The decomposition of the resin processing temperature is below its flow temperature (170 ℃ or so) that can not be processed. To do this, consider the formulation add enough effective heat stabilizers. Which is characterized by absorption of hydrogen chloride can, therefore called the hydrogen chloride acceptor, usually of metal soaps and lead salt heat stabilizer. The former such as calcium stearate, lead stearate. The latter, such as dibasic lead phosphate, tribasic lead sulfate. Because each of the heat stabilizer is a synergistic effect between, it should be matched with each other, to receive reliable thermal stabilizing effect, but also to minimize the cost and reduce the dosage. PVC resin and its total usually about 5% -7%. pull tite seals

How to maintain the seal

In the car, to improve the air tightness seal, to prevent rain intrusion into the compartment. Once the seal breakage aging will cause leaking compartment, increasing the car's driving wind noise, leaks and very easy to make body rust. It is not difficult to see, the car, the sealing strip is an important part, and usually must be regularly maintenance checks.bolt security seals

The first is to check whether the large seal cracks, with or without fracture. If you break the seal or larger cracks can be repaired using an adhesive. Particularly the use of special adhesive sealing strip, it is easy to put a big crack sealing strip mend. Of course, if the seal serious injury, or a greater degree of sealing strips aging, it is best replaced with new seals easy. Replacing the seal is not difficult, but in order to do a better job, better ask professionals.

Automotive sealing strip routine maintenance work, including the following: The first is to use car detergent for cleaning, after cleaning, coating a layer of highly permeable protective agent in order to prevent seal aging. In addition, the gap between the sealing strip is filled with dust easily, causing corrosion. To do this, you should use a brush to dust, etc. cleaned.

Seal windows and doors is an important part of the seal is to ensure airtight doors, watertight, sound and other aspects of effective measures, but it is also affected by external forces in the glass in the windows and doors security presence after a reliable guarantee. Since the sealing strip affected by climate and sun exposure will result in shrinking and aging, deformation, therefore, does not allow sealing strip under tension work, should be kept free state seal. Tightly stuck to the glass, the installation process tend to pull tight seal, can not guarantee a free state, the sealing strip in the tensile deformation state. Practice has proved that the seal is installed in the tensile deformation state, has emerged seal off, pull off, cracks and other phenomena. To this end, the installation, the seal length of the strip than the side length of the assembly of windows and doors more, the corner beveled off, with an adhesive tape firmly stretching sufficient margin.pull tight security seals

Pair of plastic doors and windows sealed materials industry Analysis

In the past the process of using plastic doors and windows of poor quality due to low performance impact of the sealing material, its quality and service life has been greatly affected, there have been many quality problems, serious damage to the merchant's reputation. Especially with the windows and doors in the building works, ranging from hard brittle, loss of elasticity and sealing function, heavy sticky "permeability", lost the use of functions at the same time, contaminating the doors and windows, affecting the appearance of windows and doors.high security seal
Occurrence of this phenomenon was attributed to the enterprises to improve quality and performance of plastic doors and windows at the same time, ignoring the doors and windows accessories introduction and development leading to the development of sealing materials lagged far behind the development of plastic doors and windows. Gratifying is that the high-grade quality doors and windows accessories, especially the doors and windows sealed material is accepted by everyone, and gradually into the window market.
Plastic doors and windows sealing strip material status
Currently, foreign material that the sealing strips are NBR, EPDM (EPDM), thermoplastic elastomer (TPE), polyurethane elastomer (P), silicone rubber, etc., and excellent anti-aging properties to EPDM higher usage rate of 60% or more.
In recent years, sealing materials, doors and windows on the market, plasticized polyvinyl chloride material of the sealing strip more than 90% market share, and was recommended modification relevant industry a high degree of polymerization of PVC and thermoplastic elastomer seal Market share is very low, most concentrated in the Beijing surrounding areas.
EPDM rubber material in China in the 1960s by the Beijing Research Institute of Chemical Industry out, but its doors on the application and development only in the mid-1990s was only put on the agenda, and in 2000 by the Capital Aerospace Machinery Company Rubber & Plastics Factory developed out of the same year, the Ministry of Construction in late through the acceptance of relevant experts, now in mass production stage, but only some domestic manufacturers in the use of high-end doors and windows.
EPDM rubber seal domestic and foreign similar products, compared to approximately 40% below the market price, but still slow development, the reason is that the majority of users do not realize the doors and windows sealing strip making a smaller proportion of the total cost, considered only cost savings, without considering the use of high-quality sealing materials brought comprehensive benefits.tamper proof seals
Sealing strip sectional design and mold making process status
Domestic plastic doors and windows sealing strip due to late development, initially limited to the cross-sectional shape is relatively simple to use glass bead seal "K"-shaped bar, window frames (fan) and sealed with a tablespoon of yarn used in small fan "0 "strip, more single species. On the contrary, foreign sealing strip with plastic doors and windows development, its production has reached series, scale, each product section are designed to meet the functional requirements related to use, and the cooperation between the profiles corresponding almost to perfection.
In recent years, with the doors and windows making foreign technology introduction, domestic sealing strip cross-sectional shape and variety, great changes have taken place, but the domestic mold making process behind, as well as domestic peer-to-one as sealing windows and doors accessories pay enough attention to the material, resulting in production out of the product from the shape is very close to the shape of the design, the use of functions are still some defects, such as the large gap with the site, the finished lamination and bonding capacity of less than the amount of the relevant requirements, etc., so that in the course inevitably there will be some quality problems. In addition to this phenomenon by the above factors, but also by a greater extent the impact of the raw materials used, such as materials processing, expansion rate.
EPDM is a comprehensive performance is extremely excellent sealing materials, not only its excellent physical properties, and good processability huge expansion coefficient is small, this kind of sealing strip made of a material almost no difference between the design requirements large, which is developing rapidly in recent years, EPDM rubber is an important reason.

Silicone rubber seal performance characteristics

Silicone rubber seal and other rubber material excellent seal, in an extremely harsh environment can be maintained rubber inherent characteristics: high temperature resistance, low temperature resistance, aging resistance, can be successfully applied to other rubber seal invalid occasions. In addition to its non-toxic, physiologically inert and has excellent resistance to physiological aging, can be widely used in medical and food cosmetic doors and other industries.bolt seal

Silicone rubber seal features: 1; excellent resistance to high and low temperature performance. 2; excellent resistance to ozone, aging, aging resistance to oxygen, light aging and weather resistance, silicone rubber vulcanizates placed outside in the free state properties unchanged for several years. 3; excellent electrical insulation, silicone rubber vulcanizates wet electrical insulation performance, the frequency change or small changes in temperature, the combustion of the silica is still an insulator, in addition, the molecular structure of silicone rubber Carbon atom less (you should know to understand the general rubber rubber is mainly composed of CH compounds, and silicone rubber is mainly epoxy silane compounds such ring body made of) and do not do carbon black filler (mainly used silica, the main component of silica, carbon black is mainly composed of carbon, silicon dioxide is an insulator, while black is good conductor of electricity), so the arc discharge less prone to scorch, and thus very suitable for use in high pressure situations. 4; special surface properties and physical inertia, this is a bit abstract, not introduce more, anyway rhinoplasty silicone breast implants are used, you should be able to think, therefore, it is suitable for use in medical and food equipment in! 5; high permeabilityhigh security seal

Sliding seal on the knowledge

Everyone in the decoration curtains, often do not know what the seal above role, the installation should pay attention to anything. Below Wall seals company to tell you about this knowledge.pull tight security seals

Sliding seal installation position generally on the window (door) fan on the fan frame surrounded or enclosed bridge (windshield blocks), and enhance the seal between the frame and the fan. Specifications are affected seal watertight sliding doors and an important factor in the performance, but also affect the switching power windows important factor.

If the size is too large or seal hair shaft is too high, not only difficult to assemble, and to make doors and windows mobile resistance increases, especially in the initial resistance when turned on and off when the last place greater resistance. Size too small or vertical seal not high enough, easy to emerge outside the tank, the door sealing performance greatly reduced. Seal subject to siliconized satisfactory quality seal surface appearance straight, bottom and vertical hair smooth, without bending, no pitting on the floor, in line 0.20MM requirements.printed cable ties

Doors and windows sealed coloring system

Rubber seal materials used in the processing required before stir-in pigment, and sometimes two or more of the pigment with the use, and adding an appropriate amount of a pigment dispersant, so the seal must also be considered when producing ingredients coloring system is indispensable.barrier security seals 
Coloring system in the seal has the following effects:
(1) improve the sealing of the weather resistance, in particular carbon black producing black seal bar will produce sufficient weatherability.
(2) so that the sealing strip for easy identification, classification.
(3) the seal looks beautiful, and the whole building coordination.
Can be used to seal the color is usually: pigment carbon black, titanium dioxide, titanium yellow, iron oxide red, ultramarine blue, cobalt green and other non-toxic safe paint.seal cable

Doors and windows sealed system filled

Seal in the design of production formula, adding filler can produce the following effects:
(1) improve the sealing of the dimensional stability, heat resistance, weather resistance and have a reinforcing effect. metal security seal
(2) regulate seal material hardness, weight loss, stretching 〖HJ * 4/9〗 energies.
(3) adjust the melt flow properties and extrusion processability. 
(4) reduce the material cost.
Elected to use filler should pay attention to:
(1) In the PVC and rubber materials in order to improve the dispersibility of times and to increase the dispersibility of the filler and the resin filler cooperation with a key, and activation treatment of the filler.
(2) plasticizer consumption.
(3) to heat and light stability.
(4) color and luster.
(5) on the processing performance.
Can be added in the rubber seal packing types, many specifications, such as calcium carbonate, carbon black, white carbon black, clay, talc, kaolin, etc., can be considered optional.
PVC can be divided into soft PVC and rigid PVC. Rigid PVC market which accounts for about 2/3, soft PVC and 1/3. Soft PVC is generally used for floors, ceilings and leather surface, but because of soft PVC containing softener (which is soft PVC and rigid PVC distinction), is easy to become brittle and difficult to preserve, so its use has been limited. Hard PVC free softener, so good flexibility, easy molding, hard brittle, non-toxic pollution, save a long time, so it has great development and application value. Below are referred to PVC. PVC is essentially a vacuum plastic film for packaging various types of panel surface, it is also known as the decorative film, with film, used building materials, packaging, pharmaceutical and many other industries. Building materials industry accounted for the largest proportion, 60%, followed by the packaging industry, there are a number of other small-scale applications in the industry.
PVC is PVC, bright color, corrosion-resistant, durable, due to the increase of the manufacturing process plasticizers, anti-aging agent of some toxic auxiliary materials, so its products are generally not stored food and medicine.indicative seal

Refrigerator seal enzyme how to do hair

Rag moistened with warm water to clean the detergent, especially dirty place to wipe with toothpaste.barrier seals
It should be noted that:
Door seals as stiff in a long time, so use hot water till soft to rub, preferably heated with a hair dryer to make it soft, generally light hand touch the door seal, can freely change its shape is appropriate, followed not clean too hard, because the door seal is thin, forced the door seal scrape over the General Assembly, so that insulation performance will drop, more harm than good.
Consumer Law states: halted home appliances, manufacturers need to keep the accessories more than 5 years to prepare for maintenance purposes, so manufacturers generally took five years as a spare storage time. Although the door seals can be replaced, but if the time of purchase for too long, it may not be able to buy the spare parts.nylon cable tie

Silastic sealing strip formulations Identification of laboratory tests

Silicone rubber seal laboratory analysis process: sample evaluated, purification, instrumental analysis, spectrum analysis, secondary verification five processes, NMR analysis, XRD fluorescence, infrared analyzer, GC-MS analysis and other dozens of analytical instruments Union used to obtain detailed spectral structure, formulation of reduction guideline development direction. Micro-spectroscopy provides silicone rubber seal formula reduction, styrene-butadiene rubber, butadiene rubber, nitrile rubber, natural rubber identification testing, rubber antioxidants and other additives formulations reduction, provide rubber low temperature resistance, tear strength, aging resistance, product quality diagnostic, the unknown composition detection, industrial diagnosis.
Main business:cargo seal
[Resin Identification: plastic types component content identification test, issued by the qualification report, with time short, spend less, resulting quasi-
【Recipe Restore】: After a the scientific method analysis of rubber ingredients, conjunction with standard spectrogram, experience a wealth of expert restore the plastic formulations, and to provide vendor reference
【Performance optimization】: Depending on the supply of of the sample of the performance improvements their own products, or the based on the supplied performance parameters design products, such as resistance to low temperature, tear strength, anti-aging performance, etc.
【Quality diagnostic】: from the analysis of ingredient the perspective of solve product quality problems, such as scorch, spray frost, vulcanization time is too long and other issues, provide a complete set solutions to problems
Micro-spectrum chemical advantages:
One, NMR analysis, GC-MS analysis method, infrared analyzer, GC-MS analysis method, XRD fluorescence et al., The instrument complete;
Two, the oil experienced experts sits, recipe analysis high accuracy;
Three, possess CMA certification qualifications, has the most comprehensive product spectrum of gallery, almost able to identify available in the market all of the Rubber & Plastic macromoleculeplastic truck seals
So far, nearly ten thousand enterprises with silicone rubber seal certified laboratories and technical development of silicone rubber sealing strip formulations.

VITON Fluoro Rubber sealing strip

VITON Fluoro rubber seal Section: High temperature resistance than silicone rubber, have excellent weatherability, ozone resistance and resistance to chemical resistance, cold resistance then the bad. For large majority oil products & Solvent Du possess to resist capacity, particularly are acids, an aliphatic hydrocarbons, aromatic hydrocarbons and animal and vegetable oils. For diesel engines, fuel systems, and chemical sealing requirements. Not recommend the use Yu ketones, low molecular weight's esters and a mixture containing nitrate. General temperature range of -20 ~ 250 ℃.security seal

FLS fluorosilicone rubber seal: the performance of both fluorine rubber and silicone rubber advantages, oil, solvent, fuel resistance and resistance to high temperature resistance are good. Resists oxygen containing compounds, containing aromatic solvent and chlorinated solvents of erosion. Generally used for aviation, aerospace and military purposes. Does not recommend the exposed to Yu ketones and brake oil. General temperature range of -50 ~ 200 ℃.

EPDM EPDM rubber seal Section: has good weather resistance, ozone resistance, water resistance resistance and chemical resistance. Alcohols and ketones can be used, but also for sealing high temperature steam environment. Applicable to Yu sanitary equipment, automotive radiator and automotive brake system in the. Not recommended for food use or being exposed to mineral oil. General temperature range of -55 ~ 150 ℃.cable security seals

Seal material how to buy

NBR Ding cyanide rubber seal bars fit in the oil Department of hydraulic oil, glycol Department of hydraulic oil, di ester-based lubricating oil, gasoline, water, silicone grease, silicone oil, etc. medium. Is currently the most widely used and least expensive rubber seals. Not for polar solvents being, for example ketones, ozone, nitro hydrocarbons, MEK and chloroform. General temperature range of -40 ~ 120 ℃.marker cable ties

HNBR Hydrogenated nitrile rubber seal: has excellent corrosion resistance, tear resistance and resistance to compression deformation characteristics, resistance to ozone, sunlight, weather resistance is better. Than nitrile rubber has better abrasion resistance. Applicable to Yu washing machinery, automobiles engine system and the use of new type of environmentally friendly refrigerant R134a's refrigeration system. Not recommend the use Yu alcohols, esters or a aromatic's the solution. General use of temperature range is -40 ~ 150 ℃.

SIL silicone rubber seal: has excellent heat resistance, cold resistance, ozone resistance, resistance to atmospheric aging. Has good insulating properties. However, the tensile strength of no worse than the general rubber oil resistance. For household appliances such as electric water heaters, electric irons, microwave ovens. Also applies to the human body in contact with a variety of supplies, such as kettles, water dispenser. Not recommended to use Yu big majority was concentrated solvent, oil, concentrated acid and the sodium hydroxide. General temperature range of -55 ~ 250 ℃.security tie

Silicone seal component analysis process

Silicone seal component analysis process: After the evaluated sample pretreatment, separation and purification, equipment testing, spectrum analysis, synthesis, verification five steps, using NMR analysis, X fluorescence spectroscopy, IR analyzers, mass spectrometers and other small instruments combined with more than 10 units obtain precise spectrum structure, formulation of reduction guideline development direction.numbered security seals
Micro-Spectral Analysis Significance:
Micro-Spectral Analysis Significance:
[Resin Identification: silicone for unknown samples, the main component identification, provide proof of import and export, high efficiency, low cost, accurate results
[Formula detection]: After analyzing the scientific method rubber components, reference spectra result, R & D experts to restore from a plastic composition ratio, and provide some guidance materials
[Performance improvement]: according to supplied samples mimic the performance of production, or according to parameters of performance, improved formulation, such as low temperature resistance, tear strength, oxidation resistance, etc.
[Industrial Diagnosis: exclude non-technological problems caused by the product quality problems, such as blooming, blooming, curing time is too long and other issues, to provide a complete set of solutions to problems
Silicone seal is methyl vinyl silicone rubber-based adhesive, adding various fillers (reinforcing agents, heat, modifiers, etc.) to knead, books pass, filter, and sulfur, molding, extrusion, bonding and other production processes made
Silicone seal is characterized by both high temperature (up to 300 ℃) and low temperature (minimum -100 ℃), is currently the best cold, high temperature rubber seal; while excellent electrical insulation, heat and ozone oxidation stability high chemical inertness large. Disadvantage is lower mechanical strength, oil resistance, solvent and acid and alkali resistance is poor, difficult to cure, more expensive. Operating temperature: -60 ℃ ~ +200 ℃. Mainly for the production of high temperature resistant products (pipes, seals, etc.), high temperature wire and cable insulation, due to its non-toxic and tasteless, but also for the food and medical industries.truck seal

What is performance polyurethane seals

Reason why the development of polyurethane seal quick demand, because it has excellent performance. Polyurethane seal features are:security tie
(1) excellent wear resistance; mechanical strength, resistance to biological aging
(2) Low temperature flexibility; at very low temperatures, generally Other materials are hard brittle seals, the polyurethane seal even at - 250 ℃ less able to maintain its performance.
(3) Adjustable wide range of performance, flexibility, and has excellent resilience
(4) tack, good adhesion; Because the molecular chain of the polyurethane - NCO and a variety of active hydrogen-containing functional group, to form chemical bonding interface. Thus, a variety of materials with strong adhesive properties.
(5) oil resistance
(6) affordable
(7) weather is good, the service life can be up to 15-20 years;vehicle seals

Door seal seals generally what

Market with a wooden door seal material is generally of PVC, soft PVC in its key role in its inside is nothing more than adding plasticizers good or bad, there are currently more stable plasticizer dioctyl phthalate resin, two small fat. But now the market price is high, some unscrupulous traders are using some other cheap stuff instead of (waste oil, oil refineries remaining foundation, etc.) to consumers is a big risk.cable marker ties
Silicone seal is environmentally friendly, non-toxic, tasteless, etc., with excellent overall performance and good technical and economic effects, has been in aviation, aerospace, nuclear, electrical, electronics, instrumentation, automotive, machinery, metallurgy, chemical industry, health care, all areas of daily life to get a wide range of applications.
With the improvement of quality of life, more and more doors silicone seal replacement of PVC door seal, but many users can not distinguish the following is inferior PVC seal and advanced silicon rubber seal identification method:
One, with the smell whether there smell, the general PVC seal will be very pungent odor, normal silicone seal will only have a little something taste, taste is very small, almost smell.
Second, while the PVC seal and silicone rubber seal, a period of time at a high temperature (on the roof or a sunny place), PVC sealing strip short time become very soft, and some will be sticky, sticky on the object on. The surface of the grease seal precipitated contaminated dust, and yellow (very easy to suck the oil soil) permeability, left the dirty physical properties of silicone rubber sealing strip did not change, the family used a pressure cooker ring is silicone rubber, that is, use of non-toxic silicone rubber high temperature and environmental performance, silicone rubber 200 ℃ working environment, no significant changes in physical properties.
Third, while the PVC seal and silicone rubber seal on the freezer, place a few hours, PVC sealing strip will become feel very stiff, easily broken, the physical properties of silicone rubber sealing strip unchanged. -50 ℃ silicone rubber physical properties without significant change.
Fourth, some of the cheaper prices will be a lot of filler seal, so the surface will not be very bright, dull, cut off seal off sections will be very rough, feel stiff, stretched almost inelastic, silicone rubber seal bright colors, texture soft, stretched extremely flexible sealing strip cut, broken section into a delicate sheen.
Five, silicone rubber seal burning almost smokeless, odorless, combustion, burning substance was a white powder.plastic truck seals
Six, burning, PVC sealing strip combustion blistering, shrinkage, take black acrid smoke, combustion is not sufficient, leaving hard plastic residue.
Seven, look at the proportion of how much energy per kilogram of rice. PVC seal traders in the use of fillers made a great play tricks, some manufacturers for the pursuit of greater yields, (save a little electricity) using talcum powder, TSP do things like fillers, greatly increasing the proportion of seal products, (Our users generally buy mostly in kilograms, according to the length of use) so that virtually has actually increased costs severely reduced the quality Debu attempt. Add TSP PVC seal, you stretched by hand back and forth several times, the surface will be a small amount of a white powder. PVC seal the density should be 1.4-1.6. Silicone seal applied nanoscale silica as a filler reinforcing effect, light texture, density, specific gravity 1.1-1.25 between, so the volume ratio than PVC sealing strip 20% more.
Door seal basic function is thermal insulation, sound insulation, wind and dust, the actual key to seal, seal quality seal plays an important role. With a variety of petrochemical products prices continue to rise, some irresponsible manufacturers began aspects of unfair competition from the raw material (the so-called shoddy, shoddy). These affordable, even as low as 2-3 cents per meter seal doors of factories became irresponsible choice because they are a few hundred dollars doors almost no cost, resulting in a decrease in quality doors , l brought many hidden dangers (air leakage, no dust, no noise increases the heating and air conditioning costs), more harm than good, it is worth considering.

2013 sealing industry status and future trends

With the industrialization and automation level, supporting a large mechanical equipment needs high performance and high reliability of hydraulic pneumatic and sealing components. Preliminary estimates, expects domestic hydraulic, hydraulic, pneumatic and sealing products total demand will be increased to 20 billion yuan in 2005 to about 350 million. Among them, hydraulic products from 100 billion to 200 billion yuan, hydraulic products from more than 10 billion to $ 20 billion, pneumatic products from nearly 30 billion to 50 billion yuan, sealing products from more than 30 billion million to $ 7,000 million based on the state's infrastructure and industrial construction boom; addition to the Three Gorges, water, natural gas, electric power, and the Qinghai-Tibet Railway construction of the century, there are a large number of large coal mines, oil fields , open-pit iron, power plants, airports, ports, high-speed railway, highway and other key projects, as well as a large number of urban construction and residential construction. To this end, earthwork handling the increasing workload, coupled with the development of groupage logistics modernization, and new processes, new technologies and new materials would make the long-term domestic demand for construction machinery to maintain growthsecurity tie
Rubber seal industry constitute the whole, the formation of state-owned enterprises, private enterprises, foreign-funded "three pillars" of the situation, the output value is basically one-third each. Intensify reform of state-owned enterprises are; rapid rise of a large number of private enterprises; foreign capital poured into the world's major companies are basically well-known in China through joint ventures, sales and other business, presenting "the transfer of manufacturing to China," the situation
With China's rapid economic development, various types of machinery and equipment hydraulic, pneumatic drive and control the growing realization of sealing technology increasing demand. Of fluid power products market is growing rapidly, in addition to the United States, Europe and Japan, but in developing countries, ranked one. China's imports are also increasing, and the market has huge development potential.stainless steel wire ties

EPDM seal mechanical seal for sealing teach you the material requirements and uses

EPDM sealing strip seal products are manufactured windows and doors seal, automotive seals, train seals, cabinet seal, ship seal strips. Material is divided into EPDM sealing strip, PVC rubber seal, silicone seal, TPE seal, TPV seals, nitrile rubber seals, polyurethane sealing strips sealed different media, as well as equipment The working hypothesis is different sealing materials having different required adaptability. Sealing material shall meet the requirements of the sealing function of the sealing material requirements generally:vehicle seals
1, material density, and not leaking medium
2, a suitable mechanical strength and hardness
3, compressibility and good elasticity, permanent deformation
4, does not soften at high temperatures, decomposition, do not harden at low temperatures, do not rattle
5, anti-corrosion properties, and the acid, alkali, oil, medium to long-term, small changes in the volume and hardness, and does not adhere to the metal surface
6, the friction coefficient is small, good abrasion resistance combined with the softness of the sealing surface
7, good resistance to aging, durable
8, manufacturing convenient, cheap, easily drawn.
Rubber is the most common sealing material. In addition to the rubber, the material is suitable as well as sealed graphite, PTFE and a variety of sealant.tamper evident tapes

Mechanical seals and sealing principle characteristics

Between the ring and the stationary seal ring: is by elastic elements (springs, bellows, etc.) and sealing the liquid pressure in the relative motion of the ring and stationary ring contact surface (face) to generate an appropriate pressing force (compared pressure) of the two smooth, flat end surface to maintain close contact with a very thin layer between the end faces of the liquid film to achieve the sealing effect. This membrane has a fluid dynamic pressure and static pressure, equilibrium pressure and lubrication it plays the role of the end face. The reason why both end faces must be clean and straight is to give high end to create a perfect fit and the average than the pressure on the premise, which is the relative rotation of the seal.numbered security seals

Mechanical seal is by one pair or several pairs perpendicular to the axis relative to the sliding face in the fluid pressure and compensation institutions elastic (or magnetic) to keep under seal affixed to achieve the merger with auxiliary shaft sealing device leakage resistance

The company has passed ISO/TS16949 quality management system certification, the company's products registered brand is "clean city." Products have passed ISO9001, ROHS environmental certification.

Welcome customers to consult a variety of product information, seal thousands of styles, trying to give you choose not to develop the mold seal products.seal for containers

Bright and clean workmanship and reliable quality seal

1 using EPDM rubber, the microwave curing process forming a smooth surface appearance, has good flexibility and resistance to compression, resistance to weather aging, ozone resistance, chemical resistance, and wide temperature range (-40 ℃ ~ +120 ℃), excellent performance, has been manufacturing automotive Fenestration other widely used. Different shapes, different materials, or cold, heat, foam, solid body, as well as a special performance requirements for products, can meet the needs of design and use.numbered security seals

(2) using a semi-circular design, using construction adhesive sealant principle after sealing body to ensure maximum continuity between the components of the curve, slope and curvature continuity curve effectively avoid the steam flow generated several parts of the body separation, while bringing the noise disturbs the cyclical wake, enhanced airtight performance, minimize wind noise. South Korea imports bow tape, quality can be comparable with 3m, weather resistance and long service life.

3 after construction effect: steady heavy door switch. Improve vehicle air tightness and dust capacity. Efficient inhibition of wind noise and reduce interior noise. Improve the car sound field to enhance acoustics.self-locking cable ties

Little big security seal protection devices

Shaoxing electrical safety inspection in the autumn, we found some outdoor boxes varying degrees of leakage risks. To solve this problem, the relevant technical personnel department conducted a joint field surveys brothers and discussions designed a simple and practical seal, be installed in five small box frames, an effective solution to the problem of leakage.security stickers
"Five Little Boxes" is contact a substation, an important part of the secondary equipment is directly related to the safety and health of substation operation. Over many years of outdoor open-air runs, rust, leakage, leaking, into tidal phenomena have occurred, once inside the water, causing lower secondary circuit insulation causing a short circuit to ground, the consequences could be disastrous.
"Peak winter is about to begin, to which we combine fall safety inspection, equipment troubleshooting, routine inspections and maintenance of all equipment within the substation careful Mopai, identify problems and timely rectification, implement, and ensure equipment is maintained in good working condition . "Work Safety Supervision Bureau responsible person.
In addition to the installation of seals, the council also on the "five small box" blocking, lighting, heaters and other operating conditions of the system investigation to ensure that it works well to avoid security accidents.container seals

How to clean the refrigerator seal

Since the room is relatively closed, interior also easily create a variety of bacteria, in this case, the room is closely related to health and the health of the occupants, both skin and hair is the relationship. So, for our health, we must maintain a good indoor health concerns prevent bedroom "Toutengnaore" some of the specific measures.waterproof labels

Refrigerator door seal strip up to dozen of microorganisms, the presence of these microorganisms can easily lead to various diseases, with alcohol soaked dry cloth seal, the best results. In everyone's consciousness, refrigerator cooling can both fresh and put food into the refrigerator on the "insurance" it. In fact, the refrigerator is not safe ...... fridge is not safe Refrigerator prolonged use is not yet timely clean-up, there will be an unpleasant smell, which is due to the mix of various items inside the refrigerator caused. In order to completely remove the odor, you should buy with food as possible, the items inside the refrigerator storage time not too long. Storage time is too long, it will affect the food is delicious and easy to produce odor. Therefore, items stored preferably not more than one month. Refrigerator leftovers should be eaten as soon as possible, to be heated before eating.seal for containers

Sofa: germs Favorites "sit"
Compared with smooth leather sofa, fabric sofa fabric fibers stranded dust and dirt more easily, but also easy to absorb moisture. Especially in the winter indoors, sofa if infrequently cleaned, it may mildew, mites. Keeping sofa clean and most importantly, regular dusting once a week, the first beat with a dry towel, wiped the dust, and then a wet towel wipes surfaces. If the family has vacuum cleaner, dust would be better, but do not use suction brush to prevent the destruction of textile fabrics woven on line, but also to avoid large suction to suck, or it may cause weave lines were snapped. Can give cleaner fitted with flat-type suction head, suction adjusted to the strong, clear sofa slit in the dust. Either way, the arm of the sofa, cushions and crannies are key parts.

Inferior PVC seal and advanced silicon rubber seal identification method

One, with the smell whether there smell, the general PVC seal will be very pungent odor, normal silicone rubber sealing strip material will only have a little something alcohol taste, taste is very small, almost smell.

Second, while the PVC seal and silicone rubber seal, a period of time at a high temperature (on the roof or a sunny place), PVC sealing strip short time become very soft, grease seal surface precipitation, contamination dust, and yellow (very easy to suck the oil soil) permeability, left the dirty hands; silicone rubber seal did not change the physical properties, the family used a pressure cooker ring is silicone rubber, silicone rubber is the use of high temperatures and Non-toxic environmental performance, silicone rubber 200 ℃ working environment, no significant changes in physical properties.numbered security seals

Third, while the PVC seal and silicone rubber seal on the freezer, place a few hours, PVC sealing strip will become feel very stiff, easily broken, the physical properties of silicone rubber sealing strip unchanged. -50 ℃ silicone rubber physical properties without significant change.

Fourth, some of the cheaper prices will be a lot of filler seal, so the surface will not be very bright, dull, cut off seal off sections will be very rough, feel stiff, stretched almost inelastic, silicone rubber seal bright colors, texture soft, stretched extremely flexible sealing strip cut, broken section into a delicate sheen.

Five, watching weight, how many meters per kilogram can. PVC seal traders in the use of fillers made a great play tricks, some manufacturers for the pursuit of greater yields, (save a little electricity) using talcum powder, TSP do things like fillers, greatly increasing the proportion of seal products, (Our users generally buy mostly in kilograms, according to the length of use) so that virtually has actually increased costs severely reduced the quality Debu attempt. Add TSP PVC seal, you stretched by hand back and forth several times, the surface will be a small amount of a white powder. PVC seal the density should be 1.4-1.6. Silicone rubber seal applications nanoscale silica as a filler reinforcing effect, light texture, density, specific gravity 1.1-1.25 between, so the volume ratio than PVC sealing strip 20% more.

Six, burning, PVC sealing strip combustion blistering, shrinkage, take black acrid smoke, combustion is not sufficient, leaving hard plastic residues,

Silicone rubber seal burning almost smokeless, odorless, combustion, burning substance was a white powder.Fixed Length plastic seals

Traditional inferior PVC seal symptoms of their products

1. Permeability surface precipitation phenomena occur, those fundamental and PVC waste oil is not compatible solution, seal surface is prone to grease, light-colored wooden door leaf surface of infected files and traces of yellow, resulting in contamination of the product, there is not even environmentally friendly Many volatile substances, air pollution.luggage seals

2. When the so-called volatile or plasticizer exudation after the seal will lose its original softness and become very rigid, and quickly aging of contraction, the length contraction, broken cross-section contraction, so that there is a part of the closed door large gap tightness becomes poor (leakage, leakage of dust) until we lose sealing insulation effect, increasing the cost of air conditioning and heating, without the buffering effect, the doors of life will be greatly reduced.releasable cable tie

Car door seal surface is how bubbles

Car door seals and other rubber seal products surface bubbles appear, because the following aspects:cable tie markers

1, there is water (add a little mixing calcium oxide);

2, is not fully cured, unfamiliar look with bubbles;

3, a vulcanizing agent impurities, impurities in advance into a small molecular decomposition products in the residual air bubbles;

4, the mold itself exhaust design is unreasonable, plastic punch line gas can not be discharged;

5, poor dispersion;

6, long rubber mastication, the vulcanization product has bubbles.container seal

Replace seal reinforced great sound effects

Enhanced seal replacement, has been open to always feel there will be some uneven road heard noises coming from the four, there is also a great little drive faster the wind, and later heard a friend said it should be seal problems, So the Internet to find a store that is a direct replacement for the original car with no hollow ring of the strip, according to the original car design in situ, with a D-ring plastic door trim custom integration, a shape, not a secondary processing The! Rubber with metal clips, loaded into the car is very strong and will not fall off the case. Rubber material of good quality, no smell! Feel good effect! Accord could significantly reduce air leakage problems with wind noise and door. She listens to move the heart on the set of the four back, put something after the effect is really very obvious.barrier seals

First, close the sound thick; Second, sitting in the car did not change until I felt a lot worse, tightness improved; Third, when the wind speed is also significantly reduced.luggage seals

Sealing strips come in spring

Doors and windows of development history, too, is the history of the sealing strip. Replacement of windows and doors, also led to the replacement of the sealing strip. However, Chinese-style production concept but well worth considering - blindly cut costs, low-cost competition. Door and window accessories sector, many big brands, Kennedy Lang, Young, Noto, Sijiliya ...... but seal the big brands very much. Let's not technical problems, the problem is the production of ideas. Hope seal industry boss who insist do yourself, do not be down with the low price of small manufacturers, doors and windows to China tomorrow, the more his own, doing a responsible seal. Door and window accessories sector truly do the big brands.self-locking cable ties
First, natural rubber sealing strip era
The mid-1990s with the ordinary steel doors and windows aluminum windows and doors as well as ordinary wooden windows, doors and windows China has accounted for almost all of the share. Natural rubber sealing strip is then the era of China's small workshop-style production model, Chinese-style lower costs, coupled with the lack of natural rubber itself, resistant to aging in the natural environment, a few months cracking, hardening, fracture, and finally in the steel doors and windows are prohibited by the state to use at the same time, the market will gradually fade out ...... two, PVC PVC sealing strip
The last century in the late 1990s, steel doors windows are synonymous with nobility. There was a story, Hebei Province, a provincial officials personally to a steel profile factory line a half months to get profiles. Ushered in the era of plastic windows and doors, and the state began to promote the sealing strip on the use of PVC sealing strip, PVC seal its not crack, easy to weld, became the darling of steel doors and windows sealed. However, only 2-3 years, the question arises. PVC plasticizers precipitation, this troubled world industry problems, in PVC seal has been significantly reflected. As plasticizer precipitation, resulting in a strip contamination profiles, length contraction, off-sectional contraction, Mifengbuyan problems abound. The Chinese-style small workshop processing, Chinese-style lower costs, Chinese-style low-price competition, leading to a poor quality recycled PVC plasticizers and applications, is exacerbated by the problem of the entire seal industry, and thus the end of PVC sealing strip starting to show.tamper evident labels

How to maintain the door seals

Maintenance of the main door is the door seal maintenance, are required around the doors equipped with rubber seal. Airtight seal can be improved to prevent intrusion into the compartment rain. Once the door seal breakage aging will cause leaking compartment, increasing the car's driving wind noise, leaks and very easy to make body rust. It is not difficult to see, the car, the sealing strip is an important part, must be regularly maintenance checks.pull tight security seals

The first is to check whether the large seal cracks, with or without fracture. If you break the seal or larger cracks can be repaired using an adhesive. Particularly the use of special adhesive sealing strip, it is easy to put up a good big crack bar. Of course, if the seal serious injury, or a greater degree of aging, it is best replaced with new seals easy. Replacing the seal is not difficult, but in order to do a better job, better ask professionals.

Sealing strip routine maintenance work, including the following. The first is to use a car wash detergent, after cleaning, coated with a high permeability of the protective agent in order to prevent aging of the rubber seal. In addition, the gap between the sealing strip is filled with dust easily, causing corrosion. To do this, you should use a brush to dust, etc. cleaned.

Preferably before rain protective plastic coating agent. On the hardtop, its window glass and the body of the seal, are totally dependent seals, seal deformation aging if large leaks inside easily. For this reason, if the weather is like going to rain, it is best to take the opportunity coated with a plastic protective agent. If you can regularly conduct this maintenance can greatly improve the seal tightness.stainless steel cable ties

Sealing strip is easy disassembly. In appearance, seals and body seem to be firmly bonded together, in fact, completely wrong. Installation, mostly to seal the cracks directly stuffed into iron. When the seal patch, or the seal is applied to the surface protecting agent, even when cleaning the body, it is best to remove the seal, so it is very easy to work.

Car sunroof rubber seal also requires timely maintenance

Passenger car sunroof most basic configuration. It is understood that car sunroof is sealed by a rubber seal, rubber seal to guarantee the skylight dust, water plays an important role. But when the car roof is open, the rubber seal tracks exposed to air, the inevitable accumulation of dust, even ran small gravel. Sunroof prolonged use may lead to deformation due to wear and clogging the drainage holes.tamper proof seals

Therefore, regular cleaning of the track, apply lubricant to the track is very important. Before winter, skylights experienced a summer use of high intensity, you should promptly be protected against skylights, cleaning rails memory and some sand, so as not to reduce the tightness of skylights, resulting in leaking skylight. Sunroof rubber seal to timely maintenance. Need to periodically with a damp sponge dipped in rubber protective agent cleaned once every six months to the car can also be beauty shop last time for the rubber sealing strip light, to maintain its elasticity and prevent roof leaks.pull tight plastic seals

The arrangement of the door seals

The arrangement of the door seals are: Door-mounted (fixed seal around the door), body-mounted (fixed on the doorway seal around the skeleton), doors, body double mounting (in and around the door openings around double side are mounted seal).bolt seals

Obviously, doors, body double mounting seal improves the vehicle sealing. Can use different parts, made of a variety of complex cross-sectional shapes. To enhance the sealing effect. Often set in the limousine on three, four seals, install the front pillar and roof side parts of the four re-sealed beam structure. This multi-channel sealing crevices are generally arranged in the front door, in addition to a sealing function, there are auto noise reduction effect.

Some car doorway foamed rubber seal is made with a metal frame and a chucking surface of the plastic parts at the same extrusion. The foam part is used EPDM rubber (EPDM), a density of 0.6 ± 0.18/cm ³, fitted jacket surface of the grip portion is polyvinyl chloride, a hardness of 65 ± 5HS; metal frame materials used for low-carbon cold rolled steel sheet, the surface requirement bright; gripping part of the surface with a pattern, patterns shapes and colors and interior colors and patterns to match, played a role in beautifying the interior.

It is composed of three unequal section of the aluminum composition, so set the door glass in the door seal section is composed of three components ranging

Section of the above three properties of materials are chlorinated polyethylene with rubber (PEC), contact with the glass surface with a flocking, the extrusion section. Requires no less than the whole of the seal 48h, higher than 60 ℃ cases, the installation status (stuffing) allowed the aging pattern, it should be able to withstand continuous partial flocking alternating load wear test, and require nitrogen test 1000 hours of light discoloration allowed, the products, high quality requirements, process more complicated, more difficult, there are certain difficulties in the current domestic production.tamper evident seal

Analytic function of automotive door seals

Used to maintain the body seal doors, windows and other movable portion, and front and rear window, a triangular window, which do not seal the movable portion, the sealing strip should be adapted to the shape of the section of the use of different parts and different functionality.container security seals

The purpose of the sealing strip:

① keep the car to avoid the rain, dust, heat and sound insulation;

② When the body is subjected to vibrations with a twist, the seal also play a buffer, absorbing, maintaining the role of the glass;

③ on the edge of the transfer windows for decoration;

Seal material, early often use natural rubber, later developed into an ethylene, propylene rubber, nitrile rubber, synthetic rubber as the mainstream, there is also polyvinyl chloride resin. For the former, rear window, triangular windows and other fixed window edge portion, there is also a variety of adhesive forms (such as direct bonding method or rubber band bonding method).

As a synthetic rubber foam should have a good performance, which requires:

Excellent weather resistance;

For coating with a non-polluting;

Small residual deformation;

Low water absorption;

At low temperatures can maintain good flexibility;

Heat resistance;

Good wear resistance.padlock seal

Door seal with the body is a more difficult position, sealing requirements more stringent, should be sealed part of the long, cross-sectional shape of the sealing parts are not the same, but the doors open and close frequently.

Door seal to achieve the basic cross-sectional shape in three ways: bending type, compression type, complex. And different parts of the seal practical shape is more complex.

Car door seal surface causes air bubbles

Car door seals and other rubber seal products surface bubbles appear, because the following aspects:rail car seals

1, there is water (add a little mixing calcium oxide);

2, is not fully cured, unfamiliar look with bubbles;

3, a vulcanizing agent impurities, impurities in advance into a small molecular decomposition products in the residual air bubbles;

4, the mold itself exhaust design is unreasonable, plastic punch line gas can not be discharged;

5, poor dispersion;padlock seal

6, long rubber mastication, the vulcanization product has bubbles.

Refrigerator seal Yi filth

Although the refrigerator is used to preserve food, but the refrigerator is not cold environment and isolated breeding of bacteria, many bacteria lurking, if not cleaned often, and very easy to breed. Studies have shown that the average temperature in the indoor environment 26 ℃, the average humidity of 75% or less, dishes refrigerator (4 ℃ to 8 ℃) conditions, within 72 hours refrigerated dishes that all bacterial growth. So clean the refrigerator to use more healthy, more at ease.seal for containers

Many products introduced in recent years in the refrigerator sterilization function has been strengthened, but consumers can not rely entirely on their own refrigerator sterilization function, or to clean and disinfect hands. Nevertheless, consumers in their daily use of the process, it is best to carry out the refrigerator regularly cleaned and disinfected. Clean the refrigerator inside the refrigerator is best to use special cleaners, use a damp soft towel with detergent to wipe the refrigerator. Can also be used as ecological approach into the soft towel soaked in vinegar, then wipe the refrigerator, but also can effectively dust, decontamination, to prevent the generation of micro-organisms after cleaning can be further put in the refrigerator a box soda, can keep in the refrigerator smell fresh.
Do not forget to clean the refrigerator refrigerator door seal, partly because there are contacts with the outside, so it is easy to filth, is said to everyday household refrigerator door seal on a dozen kinds of microorganisms, but also need to be cleaned regularly, usually recommended to use a towel soaked in alcohol to wipe clean.plastic security seals

Common seal materials

EPDM sealing strip
Integrated performance, with ozone resistance, weather resistance, high temperature, low temperature performance, chemical resistance, resistance to a variety of polar solutes, the relative density. Disadvantage is that in general, mineral oil and lubricating oil expansion volume, generally a dark products. Operating temperature range -60 ~ +150 ℃. Applicable to heat, cold, coastal, strong ultraviolet radiation areas and high-rise buildings. With its wide range of applications, integrated performance, windows and doors industry recognition at home and abroad.
Silicone rubber sealing strip
Has outstanding resistance to high and low temperature properties, resistance to ozone and weathering resistance; has excellent hydrophobic and proper ventilation; unparalleled insulating properties; can achieve food hygiene requirements for health level, to meet the requirements of various colors. Disadvantage is that the mechanical strength of the worst in the rubber material, not oil. Operating temperature range -100 ~ +300 ℃. Applicable to heat, cold, strong ultraviolet radiation areas and high-rise buildings.
Neoprene sealing strip
Comparison with other special rubber, individual performance satisfactory, but the overall balance of properties is good. Has excellent weather resistance, ozone resistance, heat aging resistance and oil and solvent resistance, good chemical resistance and excellent flame resistance, good adhesion. Poor storage stability, storage will occur during hardening phenomenon, cold is not good. Relative density. Generally black products. Are used in the oil resistance, heat resistance, environmental requirements. Operating temperature range -30 ~ +120 ℃.security ties
Nitrile rubber seal
Main feature is oil, solvent, but the impatience ketones, esters and chlorinated hydrocarbons and other media, elastic and mechanical properties are good. Disadvantage is that the ozone and oxidation easy to aging crack, cold, poor low-temperature resistance. Operating temperature range -30 ~ +120 ℃
Polyurethane rubber seal
Has good flexibility and excellent abrasion resistance, good oil resistance, hardness adjustable range (Shore A hardness of 65 to 80 degrees), mechanical properties (tensile strength, elongation at break) location, fine cold resistance and chemical resistance to corrosion intertwined, higher prices of raw materials. Of recyclable materials. To meet the requirements of various colors. Operating temperature range -60 ~ +80 ℃. For earthquake-prone areas, or near railway crane with power plants and other areas with strong vibration, and the strong ultraviolet radiation regions.
TPV sealing strip
A flexible and elastic rubber, plastics processing methods can be produced, without curing, waste recycling and re-use. Is a wide range of material properties, heat resistance, good cold tolerance, relative density, oil resistance, solvent resistance and neoprene similar to resistance to compression and abrasion etc very well. Can meet the requirements of various colors, temperature range -40 ~ +150 ℃. Applicable to the cold, as well as high-rise buildings.fixed length plastic strap seal
Plasticized PVC sealing strip
Materials cheap and easy to get, corrosion resistant, wear-resistant, acid and various chemical medium, burning resistant, high mechanical strength; drawback is easy to fit within the system plasticizer migration, hard brittle with time and lose flexibility, even in aging, weather resistance and poor low temperature performance. Generally dark products. Is not applicable to the light intensity, temperature changes little, climatic conditions are not bad situation.