plastic truck seals seal manufacturers introduce performance silicone seal

Accory plastic truck seals products produced good quality, excellent price , welcome to buy. The performance of a silicone seal , silicone material  pull tight security seals  performance , high temperature weather resistance , anti-aging fight to fight , shockproof waterproof , can fit all kinds of smooth surface material 2, self-adhesive tape back , better  bolt security seals  , high temperature plastic long-term use does not fall off . Environmental safety , good insulation , high temperature , low compression deformation , elasticity , non-toxic 3 , foamed silicone rubber foam uniform density can be achieved 0.25-0.85g/cm3, Shore hardness 8-30A. Nontoxic no odor , good elasticity , flexibility, nonporous surface without bubbles . High-strength , long life, environmentally friendly insulation products , high temperature resistance, resistance to compression , acid anti-aging, anti-UV . 4 , the surface smooth , uniform density foam 5 , good skin is not sticky. 6 good ventilation , heat resistance : Silicone rubber has much better heat resistance than ordinary rubber , can almost always use no performance change at 150 degrees ; continuous use at 200 degrees to 10,000 hours ; at . 350 degrees can also be used for some time.

Electronic security seal used in the safety of tobacco distribution

The so-called electronic Accory security sealtechnology , is the ability to record whether the car or other rigid packaging had been opened illegally , an identification technology to verify the integrity of the goods . Electronic  seal security  can be recorded cargo transport container switch status information to the electronic tag and become a carrier of goods transport information between objectives to achieve validation from the originating station to the destination station container had not been opened in the peer transport. Once the electronic  high security cable seals  is destroyed, will be reflected to the computer monitoring system.

How to identify the merits of the spiral protective sleeve ?

1 surface appearance
Plastic protective sleeve surface smooth, no lack of material , cracks, damage , burrs , no blistering and uneven ,truck security seals no impurities, variegated and other phenomena was of high quality ; contrary, was of poor quality , substandard .
2 Hardness
Qualified quality spiral protective cover hardness is generally 85-90 degrees Shore hardness is below 85 degrees or above 90 degrees do not meet the requirements. Hardness is too low , you can not play the internal product protection , binding effect ; excessive hardness , when used at low temperatures , protective sleeve prone to embrittlement, 1% to 5 % of the products can not meet the requirements, the spiral protective sleeve the protective effect of internal product is greatly reduced.
3 . Resistance to high temperature
Qualified quality spiral protective cover should have good resistance to high temperature performance. Identification of the user using the following method : turn the screw placed under protective cover 80 ℃ ambient 1 hour , 0.5 hours under room temperature under -40 ℃ environment for 1 hour at room temperature environment 0.5 hours , do it five cycles. Observation, if the spiral protective cover without cracking, sticky, depression occurred, compared with high-quality ; Conversely, if the spiral protective cover cracking , deformation, etc. One sticky or depression phenomena , the protective sleeve is inferior , not qualified.
 4 oil resistance
Qualified quality spiral protective sleeve has good oil resistance. The protective sleeve can be soaked in a mixture of the coil 70 # gasoline and 10 percent toluene for 5 minutes , without discoloration phenomenon tacky compared to high- pass ; contrary, discolored , sticky phenomenon , the protective sleeve is poor , failed.
 5. Wear
Qualified quality spiral protective sleeve has good wear resistance.
 6 tensile strength , impact strength
High- pass coil protection cover has good tensile strength and impact strength, tensile strength at room temperature is generally 25-30Mpa; generally impact strength ( notched ) at room temperature was 35KJ/M2, -40 ℃ / 24h to 5KJ / M, impact strength ( unnotched ) fixed length plastic strap seal, continuously.
 7 anti-UV
Spiral protective sleeve has good UV resistance . Protective sleeve black spiral columns must be better than carbon black production , to enhance UV resistance spiral protective sleeve .
8. Antistatic
Spiral protective sleeve is mainly used excavators, loaders, rollers pavers , forklifts , cranes, pumping machinery , outside the protection of cables and other construction machinery and injection molding machine equipment . Underground, dry environment when the job should be considered a strong choice spiral antistatic protective sleeve . Antistatic properties to enhance the internal hydraulic pipe fittings and other products , in a variety of harsh environments of the hydraulic tube play better security role !

Advantages elastic soft seal gate valve

Flexible soft sealing gate advantages:
1 small, lightweight, easy installation and maintenance, and can be mounted in any position.
2 simple and compact structure, plastic seal small operating torque, 90 degree rotation to open quickly.
3 linear flow characteristics tend to adjust better performance.
4 disc and stem-free pin connector structure, it is possible to overcome the internal leak.
5 seals can be replaced, and reliable sealing achieve bi-directional sealing.
6 disc spray coating according to user requirements, such as nylon or PTFE classes.
7 The valve can be designed flanged and wafer.
8 drive optional manual,security seals electric or pneumatic.

Introduction pump mechanical seal standard

This paper summarizes the mechanical seal on the pump standards, including marine mechanical shaft seals, pump mechanical seal alkali, acid pumps with mechanical seals, mechanical seals for pumps and other industry standards.
GB / T 5661-2004 suction centrifugal pumps mechanical seals and for soft packing cavity dimensions
GB / T 5661-2004 suction centrifugal pumps mechanical seals and for soft packing cavity dimensions including compliance with the provisions of GB / T 5662, including horizontal axial suction centrifugal pump of the cascading balanced mechanical seals, suitable for direct axis The mechanical seal and soft packing seal cavity size.
GB / T 3345-88 marine mechanical shaft seal
GB / T 3345-88 marine mechanical shaft seal provides ships with a built-in single shaft seal Unbalanced and balanced built single-end mechanical seal product classification, technical requirements, test methods, inspection rules, marking and packaging .
GB / T 3346-88 marine variable pressure pump mechanical seal
GB / T 3346-88 marine variable pressure pump mechanical seal provides marine variable pressure pump mechanical seal product classification, technical requirements, and test methods, inspection rules, packaging and assurance.
JB / T 7371-1994 alkali pump mechanical seal
JB / T 7371-1994 alkali pump mechanical seal provides alkali pump mechanical seal type, parameters, main dimensions, model species representation, technical requirements, testing and test methods, installation requirements and so on.
JB / T 7371-1994 alkali pump mechanical seal for alkali pump mechanical seal
JB / T 7372-1994 acid pump mechanical seal
JB / T 7372-1994 standard acid pump mechanical seal provides the acid pump mechanical seal with the basic version, the main dimensions, parameters, material, model representation, technical requirements and so on.
JB / T 7372-1994 acid pump mechanical seal for acid pump mechanical seal.
JB / T 1472-1994 pump mechanical seal
JB / T 1472-1994 pump mechanical seal pump mechanical seal provides the basic type, main dimensions, model representation, technical requirements, etc.,
JB / T 1472-1994 pump mechanical seal for rotary mechanical seals and other similar mechanical rotary shaft seal.
JB / T 6614-1993 boiler feed water pump mechanical seal technology
JB / T 6614-1993 boiler feed water pump mechanical truck security seals technology provides for boiler feed water pump mechanical seal of the main types, that is, requirements, testing and test methods, inspection rules and other requirements.
JB / T 6614-1993 boiler feed water pump mechanical seal technology for boiler water temperature no higher than 260 ° C the boiler feed pump seals supporting the use of heavy machinery
JB / T 5966-1995 submersible pump mechanical seal
JB / T 5966-1995 submersible pump mechanical seal provides submersible pump mechanical seal type, parameters and main dimensions, model representation, technical requirements, test methods and inspection rules, installation and use requirements and so on.
JB / T 5966-1995 submersible pump mechanical seal for submersible pumps with mechanical seals.
HG / T 2478-1993 lined pump mechanical seal technology
HG / T 4114-2009 pulp pump mechanical seal technology provides a glass-lined pump mechanical seal design, manufacture, use, testing, marking and installation requirements.
HG / T 4114-2009 pulp pump mechanical luggage seals technology for seal chamber pressure 0 ~ 0.3MPa, Operating Temperature 0 ~ 70 ° C, the shaft speed is less than 3000r/min, 30 ~ 80mm shaft diameter of the bore glass pump mechanical seal (hereinafter referred to as mechanical seal)
HG / T 2100-2003 chlorine liquid ring pump mechanical seal
HG / T 2100-2003 chlorine liquid ring pump mechanical seal provides chlorine liquid ring pump mechanical seal structure type, technical requirements, testing, installation and use.

Common features of the application of self-adhesive materials

As a self-adhesive label printing material from the surface of its structure is composed of three parts , namely the surface materials, adhesives and backing paper . Label surface material selection must be based on the use of environmental labels and handling.
Then the sticker surface material is a positive acceptance printing graphics , and finally back to accept the adhesive is applied to the material on the pasted object . Surface material to be able to adapt to printing and printing ink with good resistance, and have sufficient strength to be able to accept all kinds of processing, such as cutting , waste discharge , slitting , punching and labeling and so on.
In general , any deformable material may be a flexible adhesive material can be used as a fabric , such as commonly used paper , film, composite foil , types of textiles, rubber, thin metal sheet and the like. Types of surfaces depends on the final application and printing processes.
Some materials designed for extreme environmental conditions and design, while others tend to be short -time indoor applications . So now began to use self-adhesive label printing low pollution , waste less green printing materials , printing mostly began to flexo printing and other major green direction.
The following describes some of the labels is produced on the surface material used .
Latexes material : a strong flexible material , it is suitable for curved or cylindrical surfaces. The material of the rubber surface of the paper pulp can be sealed , so that dust and fibers are not spread . This point is particularly important for the tape label , this material was originally designed specifically for this .
Lithoprinting material : There is a very good ink absorption for the scanner. Printed material for its flat surface cleaning and famous , is a high-quality image and barcode printing the best choice.
Anti-clogging material : a shaky rough paper , have a good anti-dirty , suitable for uneven surfaces . This material has a strong and lasting adhesive , commonly used for retail goods price tag.
Casting coating material : is a high gloss pure white printing paper , mainly for advertising and packaging labels. Coating material applied on the computer to be very careful , because the ink may cause stains.
Marking materials : a stiff gray paper , commonly used in the shelf labels , ID labels lapel badges and other needs of stiff material made ​​from this material where the label surface separating from the backing paper to be especially careful, because this material Once crimped ,cable security seals not easily flattened .
Fluorescent materials : also called " white gloss " materials have a variety of bright fluorescent colors. This material is used to emphasize the importance of the document .
Foil laminated or solid material : a layer of thin metal foil is laminated to a paper base formed . The material in dark or bright metal products can often be seen .
Computer printable polyester materials : for heat , moisture , oil , abrasion and most commercial solvents have good resistance . The material is commonly used in the environment requires a lot of durability , such as certain equipment nameplate .
Vinyl : It is a universal durable nonporous plastic , can be used in grease, oil , water and chemical material surface. However vinyl difficult to print because the offset and letterpress ink drying on the surface is very slow . In many cases instead of ethylene with polypropylene .
Satin fabric : synthetic materials belonging , common clothes trademarks, name tag and other needs luxurious appearance package occasions. However, in the preparation of the surface rough silk is difficult to print out high-quality printed products .
Smudgeproof materials : a practical non-coated materials, specifically designed for the rapid absorption of ink . The material is mainly used for electronic data processing (EDP) and other computer printing .
Cited above is the most common types of surface material .container seals No one material to fit any environment, but the diversity of the surface material to meet a variety of different paste environment to ensure proud to meet the needs of most customers .

Plant transformation advantages pump seals

Over the operational status of the pump before and after reconstruction comparing this transformation has several advantages .
Save money
Although the transformation of the former investment more ( Note : buy American -made packing guns need 10000.00 yuan / to ; wadding 6000.00 yuan / kg), but because of its durability ,wire seals and is a one-time investment , from a longer time perspective, than with packing can save money by about 30% .
Little maintenance and easy
When the pump runs less time that a leak can be directly injected filler gun to packing room , and do not stop, than the tight packing method to be convenient and effective. And that such filler longer period, generally up to three months ( continuous pump operating conditions ) . Do not need to run for the period just add filler filler.
Sealing effect
Use of effective, safe, using a wide range . As the filler was mashed in a pressure situation tightly, so good sealing effect . The filler mainly composed of carbon fiber , Teflon , Kevlar and other synthetic raw materials , high abrasion resistance , low friction coefficient , and a good impermeability of the protection sleeve is very favorable. By comparison, the life cycle of the sleeve longer than the transformation of the former more than doubled. And it is not only for cold water pump, heat pumps can also be used ( eg drain pump ) , and suitable for different sizes of pumps.
Most power plants in Guang'an stage single-stage overhung centrifugal pump mechanical seal is used ,nylon cable ties it can be in a single-stage double-suction centrifugal pumps ( such as open-cycle cooling water pump ) and other low-pressure pump on the transformation , while reducing maintenance and operating personnel and equipment leaks , and to promote economic efficiency plant .

Analysis mixer rotor sealing system

Today, including the production of various components of the rubber compound is mainly used for the mixer . Mix including a polymer , the fine powder filler spread easily , carbon black , calcium carbonate and a small amount of chemicals such as vulcanizing agents , accelerators , or processing aids and a liquid oil component such as plasticized . These liquids and fine powder components are sealed by means of a rotor mixer control system in order to limit their access to the external environment .
Initially , it is easy to distribute these minor ingredients are processed through the film adhesion , called bonding . As the mixing chamber pressure is high , the paste along the rotor shaft is slowly squeezed out. In order to limit the outflow of the paste , both ends of the rotor shaft seal added .
Itself comprises two ring seals , usually in the region having a hard sliding surface . One fixed on the rotor shaft , the relative one rack-mounted . Each rotor sealing system is essentially the difference between the applied surface pressure , divided into automatic rotor seal (SSA), spring - loaded rotor seal (GA) and a hydraulic rotor seal (WYH).
Dustproof design
SSA sealing principle is based on the use of the mixing chamber pressure . If the mixing chamber pressure increases, the pressure will be transmitted to the sliding ring, which seals the locking force will increase . Minimal surface for the application of pressure , the use of disk spring assembly to the internal pressure of the slip ring to the outer fixing ring. Today, a new mixer are equipped with GA and WYH rotor seal system .
In the spring - loaded rotor seal (GA) system , Fixed Length plastic seal located mixing outdoors. Here , the inner ring fixed to the frame , the outer rotating ring fitted to the rotor shaft . Through several ring arranged around the rotary disc spring assembly surface pressure is applied through the pre- pressure of the spring nut . Lubricating plasticizer injection seals the annular gap , will easily spread by some fine bonded rubber components . Deeper lubrication hole in the slide ring fixed to lubricate sliding surfaces.
Rotor seal the water pressure (WYH) case , the sealing position closer to the rotor , in the end of mixing chamber inside the rack . Rotary slip ring fixed to the inner rotor shaft. Through the outer ring with clamping yoke sleeve . The contact pressure is controlled by the hydraulic cylinder and a disc spring assembly produced , the pressure transmitted to the outer sleeve by sliding the yoke ring on the pressure ring . Lubrication and sealing system similar to GA rotor . Since virtually sealing system to the cross-sectional direction of displacement of the mixing chamber , the rotor shaft and wear the gap between the discs , the fine material will occur in this bond .
Comparing these two systems (GA and WYH sealing system ) , it is evident sealing position is clear distinction between the two factors . WYH sealing system as close to the rotor , only a small corner may accumulate materials. On the other hand , the role of movement of wear is easy to fill directly into the sliding surface , and thus adversely affect the wear on the equipment . GA sealing system has a relatively longer annular gap , the annular gap in the powder retention time is long, so that the oil can be better bonded . Therefore , the sliding surface may be protected better , sealing force can be minimized loaded . However , at the same time truck seal, part of the material in the annular gap increases the risk of accumulation , the seal oil is particularly important here .

Several sealing material on Q

1 fluorine rubber and nitrile materials What is the difference ?
Answer : Viton and NBR rubber seals are commonly used materials . As for petroleum based hydraulic fluids nitrile better compatibility , as a sealing material has good stability ,metal security seals the price is cheap, so in the hydraulic , pneumatic seal widely used. Viton is the best overall performance synthetic rubber sealing rubber . Carbon atoms, fluorine rubber, a fluorine atom primary key replacement, stable molecular structure . Its heat resistance, good chemical stability. Therefore, in high temperature applications and special occasions more media .
(2) What is the rubber material elongation ?
A: The elongation rate is the reciprocal of stiffness of a material index , the amount of materials used in the natural state of tension length ratio expressed as a percentage . Material allows elongation is not in permanent damage or permanent deformation occurs before the maximum elongation.
3 What rubber material breathable ?
A: refers to the gas permeability of the material in pneumatic sealing and vacuum -sealed material should be noted that this performance .
4 sealing material FPM, FKM What is the difference ?
Answer : FPM is ISO 1629 abbreviation of fluorine rubber , FKM Viton is ASTM 1418 in the name abbreviation . FPM and FKM are referring to the same kind of Viton, wording is different because the European and American English are spelled differently .
5 braided packing material type which of these categories ?
A: Many types of woven material , according to the material of natural fibers, mineral fibers,barrier security seals synthetic fibers, ceramic and metal fiber four categories.
6 often said that self-healing is the kind of material ?
A: Flexible graphite .

Heat pumps and cooling pump eight differences

Heat pumps and cooling pump eight differences are as follows :
A heat pump models are generally expressed by the letter R , cold oil pump with the letter J represents waterproof labels.
2 , heat pumps pump with vertical segmented , and cold pump pump with horizontal split , some heat pump to prevent the pump centerline structures.
3 , the heat pump orifice ring gap bigger. Cold oil pump is smaller.
4 , the average heat pump seal oil seal agencies note , and cold pump not inject .
5 , the heat pump timber multi- carbon steel , alloy steel , and cold pump can be made ​​of cast iron .
6 , the heat pump bearings, bearing boxes, packing boxes mechanical seals require water cooling , and cold pump can not use .
7, the heat pump needs to warm up before the start , but with cold pump , the cooling pump is unnecessary .
8, the use temperature of 200 degrees Celsius for the cold pump, 200 degrees Celsius for the heat pump identification cable ties.

Detailed knowledge of the mechanical seal corrosion protection

The mechanical seal special structural form and the working environment and conditions, corrosion damage morphology are also diverse . PTFE seals, PTFE gasket seals and other mechanical damage to the main form of common corrosion damage , thermal damage and mechanical damage. Where corrosion damage greater harm .
A metal ring corrosion
1 , uniform surface corrosion. If the metal ring surface contact with corrosive media , and the metal itself impatience corrosion , it will produce surface corrosion , and its phenomena are leaks, early wear and tear , damage, sound and so on. Uniform corrosion of metal surfaces and non- film forming two forms , free film very dangerous metal corrosion , stress corrosion cracking is called , the choice of surfacing alloy and cast iron , tungsten carbide, titanium carbide seal ring , prone to stress corrosion rupture. Etching process with a constant speed , so that galvanic corrosion intensified.
2 , stress corrosion cracking. Metal corrosion and tensile stress at the same time under the effect of wear resistance. Corrosion fill F4 ring filled mainly refers selective etching , stripping damage or deterioration . If the hydrofluoric acid , the glass fiber molecule hot corrosion , these cracks communicate the seal faces , accelerated wear of the end face , an increase of leakage .
Two non-metallic corrosion ring
1 , graphite ring corrosion. Enterprise Information Network mentioned impregnated with resin impervious graphite ring , its corrosion for three reasons: First, when the face overheating when the temperature is higher than 180oC , to break away from the resin impregnated graphite ring , the ring wear down ; Second, if the resin impregnated inappropriate choice , so cable security seals cooling system establishment , which is mainly caused by the mistakes selection . The corrosion film , the passivation film characteristics generally has a protective effect , but the metal material used for the sealing ring , such as stainless steel , cobalt -chromium alloy such as a passivation film on the surface friction of the end face destruction , under hypoxic conditions New film is difficult to generate , select corrosion resistant impregnating resin , the use of high pressure impregnation , impregnation depth increase is necessary .
2 , the oxidation of the graphite ring . In an oxidizing medium, the end face or poor cooling in the dry friction generated when a temperature of 350 ~ 40o ℃ graphite ring can react with oxygen to produce CO, gas , can face becomes rough, or even rupture. Metallic ring , while chemical medium and under stress , will rupture.
3 , polytetrafluoroethylene ( PTFE gasket ) corrosion of the sealing ring . Will undergo chemical changes in the medium , but also the wear resistance decreased ; third resin impregnated deep enough, when rubbed impregnation layer , abrasion resistance decreases. F4 filler such as glass fiber , the first crack in the weakened area , and then to develop in depth , to rupture , crack trailer seals sealing ring generally radially diverging type, can be one or more . Graphite , metal powder to improve its heat resistance , wear resistance. Corrosion fill F4 ring filled mainly refers selective etching , stripping damage or deterioration . Such as hydrofluoric acid , hot corrosion of glass fiber molecules , so what things should be filled , as the case may be.

Can I use car lights Mifengbuyan warm baked

A: This time is often heavy rain phenomenon , it finished the rain , my car 's headlights is a fine mist of water inside ; think of the car when a mist , use baking way to remove warm air ,truck seal I do not know whether it also applies to headlights do ?
Q: As lights Mifengbuyan in cleaning and when it rains is likely to cause the water , and when large temperature difference between inside and outside , when it will form a mist. This time is best not to carry high temperature baking, headlight plastic materials are generally qualitative , if the baking temperature is too high , it may cause the headlights look in softening deformation , affecting the use and appearance. In addition , the lights are generally monolithic , transparent lamp , the lamp will stick with a protective body back , between the two will result in high-temperature baking gum melt adhesive , increasing the vehicle lights the possibility of water . In general, the moisture inside the headlights in the daytime sunlight can quickly evaporate . If your headlights frequent water phenomenon,security seal labels it should go to the service station to check the lamp body , to see is not due to damage caused by the collision lights , resulting in frequent water.

Car sealing strip composition and application

There is a very important car body sealing member is made ​​of a synthetic rubber seal, also known as protective molding gibs . Mainly used in door frames, side windows , front and rear windshield , hood and trunk lid , make the seal , the other also played vibration protection.
Production of sealing material is mainly polyvinyl chloride (PVC), ethylene propylene rubber (EPDM), synthetic rubber-modified polypropylene (PP-EPDM) , etc., by extrusion molding or injection molding method is made.
Compartment door seal mainly refers to the door frame and the door seal head and said seal. Door seal by definition is mounted on the door frame seal. Door seal not only to ensure tightness , but also bear the impact force when closed , hence it must be flexible , but also toughness , mainly by the dense gel matrix and sponge rubber foam tube composed of two parts . Dense gel containing metal skeleton, serve to strengthen the stereotypical strip and fixation. Sponge rubber foam tube is soft and elastic , plays compression deformation, pressure relief bounce function. In addition, some seal lip portion constituted by the color or affixed with glue fabric , color and beautiful decorative effect.
Door head and said seal structure , there are two , one for the whole sponge rubber foam tube , and another by a dense rubber and sponge rubber matrix composition . This seal glue or embedded in the door, and the door seal with , in order to increase the door and the body of the seal. Door seal head and said not every car are used , such as some economy cars would not , mainly from cost savings considerations.
Bonnet sealing strip made ​​of pure foam sponge rubber sponge rubber foam tube or pipe and compacting plastic composite structure for the engine cover with the front section of the seal. Trunk lid or rear door seal by a dense skeleton containing gum base and sponge rubber foam tubes that can withstand a certain impact, ensure that the back cover is closed seal.
There are front and rear window seal of windshield seals, glass run channel and window seals inside and outside bar .
Front and rear windshield seal surrounded by the pure gum type of connection is made , it also has considerable flexibility hardness, in between the windshield and the body play mat care, fixation and seal. Glass run channel seal by a different hardness dense rubber composition with inlaid into the body to ensure the accuracy of dimensions , to cable seals against leakage , noise effect. The lip seal is also flocked surface is attached , when the glass moves up and down the glass can be reduced and the sliding friction between the strips , but also can reduce the noise. This form is also used for sealing sunroof seal. Inside and outside the window type of glue made ​​from the pure or pure plastic and plastic composite type of structure, it comes with flocking surface , in addition to reducing the friction with the glass , but also play a decorative role .
Since the doors , hood and more complex geometry of the window , in the corner where the shape is often compared to adopt special seal. Therefore, there are car seal inscribed angle connector type and a variable cross-section type and other special seal, conventional sealing strip with a special seal both ends connected by molding processing or single-ended and then meet at the corner parts of the overall seal and parts of the installation requires special shape .
Past security seals  produced using artificial compression molding , process simple backward , shape a single , mostly H-shaped . The seal is now under the control produced using extrusion molding machine or injection molding techniques , including the composite extrusion , variable diameter extrusion, microwave curing , the surface coating technology. For example , under the control of the computer , the variable diameter seal extrusion technology in the extrusion process can change the size and shape of the cross-section shape varied , go. Thus, the seal can be close to the body , good sealing effect .

Fermented soft sealing valve should be adopted

Valves are the most used in the fermentation equipment ancillary equipment, which is the most used cut-off valve. Sealing valve on the media can be divided into four, namely nominal level, low leakage level, steam level and atomic level. Nominal level and low leakage level seal for valve closure requirements are not strict, for example, used to control the flow rate of the valve. Steam level sealing for steam and most other industrial valve seat, stem and body connection portion of the seal. Atomic level meter seal for sealing medium demanding applications, such as spacecraft and nuclear power equipment. Since the fermentation industry using high-temperature steam sterilization equipment for fermentation, so the valve sealing requirements of the media is a steam-tight.

Since the valve open during fermentation frequent often affected by corrosion, erosion and cavitation damages, so the valve vice structure, that contact between the valve seat and closure member for closing part of the selection is more critical. Vice-sealing valve structure divided into soft seal and hard seal two kinds. Hard seal structure sealing seat and closed by the occurrence of tiny pieces of plastic deformation squeeze each other to form a closed circular sealing contact line. Although such valve sealing effect in the application of the initial well, but more frequently fermentation valve open, easy to wear of the contact wire previously formed, or leaving the sealing surface of the pipe indentation dirty and damage. The seal of the sealing structure of the elastic deformation is small, the formation of new sealing contact line is very difficult, so long-term use may cause valve leakage, the fermentation failure. Soft sealing valve closure member generally use soft pads, the use of large plastic deformation gasket forming an annular sealing contact with a wide belt, to add plug sealing surface uneven, to eliminate the gap to form a seal. Its precision generally do not ask, if there are special requirements, body material can be stainless steel, soft wire seal off pieces with replaceable PTFE gasket, so that can be changed frequently to ensure that the valve PTFE gasket tightness

Selection of raw materials hollow door sealing performance is important

1, the total timber frame strength requirements should be easy to produce good insulation properties but also easy to make all kinds of shape recovery and are environmentally friendly.
2, promote the use of double sealed insulating glass and laminated glass with colored plastic polysulfide do spacer insulating glass insulating glass structure should be used if continuous angled corners pluggable in the joints must be sealed with butyl rubber . high security cable seals Single-sealed insulating glass with silicone rubber is unavailable to do the second sealed insulating glass is also undesirable because they are relatively short life.
3, the glass should promote the use of hollow glass and in the North should promote the use of Low-E insulating glass type. Radiant heat of the sun in the south dominated areas should promote the use of sun coated glass. Developed countries have basically not a single glass and white glass because they are not conducive to saving and improving the living environment.
4, another so-called Shuangbo not available. Some window type in order to reduce the heat transfer coefficient but also low price with a double glass that separates the two-story glass or ordinary adhesive seal mounted on the window without clicking zeolite sucked moisture is only single-channel seal. Generally intolerant aging sealant will not take long into the gray dust and can not wipe the affected eye very unsightly. Because that the use made of plastic insulating glass polysulfide insulating glass Cable tie sealing if only a single channel, then seal life is also just five glass curtain wall specification is expressly forbidden to use not to mention the ordinary sealant sealant even shorter its life the. Construction "project is the most critical aspect of life that is the durability issue. Use this Shuangbo only a temporary expedient very undesirable.

How to choose the seals

Pressure
High and low pressure, the pressure variation cycle length, the seal is broken (such as extrusion) has a great influence. The higher the pressure, the sealing member other factors greater impact on the performance, such as temperature, speed, the bolt security seals material, the piston and the cylinder gap between the piston and the gap between the cylinder head.
Temperature
As a seal material to the maximum temperature and the minimum temperature is difficult to describe, because it is the result of the combined effects of a number of factors. The piston and rod temperature is different, selected to distinguish them.
Friction
Fixed Length plastic seal and friction surface depends on many factors: the surface roughness, surface characteristics, pressure, media, temperature, material of the seal, the seal type and velocity.
Surface treatment
Experience has shown that the surface of the cylinder piston and piston rod seal life characteristics on has a very big impact. Surface roughness of the surface characteristics used to define the value of RA, RA is a surface shape of the arithmetic mean of the absolute deviation from the center line. However, these values ​​can not be fully expressed on the surface condition of the seal, because even in the same roughness, different characteristics of the surface shape of the seal may lead to different levels of wear of the sealing member.
Analysis of the above points, choose a more scientific seal selection, the entire hydraulic system is of crucial importance to play a role.

Tanker role and advantages of those seals

Tanker seals (seal) that is used in a variety of different kind of seals on the tanker (seal) product, and if this does not understand a simple thing to say is that used in a tanker lead above the lock body This tanker seals (seals) and other locks the biggest difference is that this is a one-off.

Tanker security tie (seal) can not be used with a second, like this one such tanker seals (seal) the biggest benefit is to protect the safety of the goods, there is no one moving off the tank car seals (seal) to see that, the tanker seals (seal) can also be used in postal parcel car, these car trailer container truck.

Tanker seals (seal) are also used in bagged goods bar sealing, tank containers blockade, blockade of railway wagons, etc., the lock body made of aluminum alloy die casting.

Shi Feng range can be adjusted tighter. Lock Long L39cm (can be extended), wire diameter 5mm, tanker barrier seals (seal) The main advantage is corrosion resistant, high temperature, high pressure resistance, abrasion role advantages.
Fujian is the city seal factory production tanker seals made of stainless steel wire and A3 filling layer is made of ABS plastic, sunscreen, anti-corrosion oil, Shi blockade need bolt cutters to remove the post, only to be used for marine, land, air transport, has also been widely used in supermarkets, petroleum, banking and other related fields. In the "excellent quality, competitive prices, quality service," the guidelines, we have, and in the sea, Cosco, Yangming, Mediterranean, Sinotrans and other shipping companies, as well as Wal-Mart, Auchan supermarket to establish a stable and cooperative relations.

Seal control procedures

1, packing department / warehouse good seal registration, inspection work. Registration number on the seal to check and found that numbers unclear seals, not receiving, requiring returned. On the bottom seal broken, not be accepted. On the seal for tensile testing, found that the quality, but off, it shall not be used.security seal
2, after passing inspection of seals, shipping is responsible for signature recognition, by himself, for safekeeping, until after boxing, having a good seal, the presence of security officers monitoring equipment is the responsibility of supervision negative.
3, container from the factory - the port of shipment - transshipment port - the port of destination dock layers operations, Transportation Department should strengthen the freight / freight forwarding company to communicate, track, request: various transport links seals photos, or proof seals intact documents.
4, the seal if it is damaged, the carrier shall provide too much damage occurred time and place, the responsible persons and lead to breakage causes proof.
5, on many occasions, broken seal carrier / shipping company should stop its carrier business.
6, Business / Transportation Department shall promptly notify the consignee, asking them for bills of lading to proofread and check whether to replace or damaged seals.
7, the relevant record: "Container shipping record", "container inspection record"luggage seals