Common Seal Material Description

Depending on the application may be different in different types of security seals used in combination to accommodate different sealing conditions. Its commonly used materials can be divided into two categories, namely rubber and resins. A rubber sealing material used nitrile rubber, polyurethane rubber, fluorine rubber, silicone rubber, commonly used resin sealing material PTFE, phenolic resin, polyamide resin.
First, the rubber is a high elasticity of the organic molecular compounds, the main component of natural or synthetic caoutchouc. Raw rubber after vulcanization process and after adding various ingredients, so that the rubber can be made with our performance requirements. The rubber sealing systems are mostly used nitrile rubber, polyurethane rubber, silicone rubber, fluorine rubber.
1, the nitrile rubber is a copolymer of acrylonitrile butanediyl the body, it has good oil resistance, abrasion resistance and aging resistance around the song, so it is the most commonly used synthetic rubber.
2, polyurethane is a polyester or polyether with diisocyanate polymerization of the compound, it is high wear resistance, oil resistance, aging resistance, ozone resistance, in addition, is also very good air tightness.
3, the use of silicone rubber wide temperature range, anti-aging and resistance to radiation resistance.
4, fluorine rubber is a copolymer made by the fluorine-containing monomer organic elastomers, high temperature up to 300 º C, acid and alkali, abrasion, sunlight resistance, flame resistance, excellent air tightness is the overall performance of special synthetic rubber. Viton deficiency is poor cold tolerance, resistance to poor processability, low elasticity and expensive. Usually used to make the rubber O-rings, oil seals, rotary lip plastic seal, reciprocating seals, etc., the seal industry, one of the most commonly used materials.