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O-Ring material

2018-12-20

1. NBR

NBR is a kind of synthetic rubber produced by low temperature emulsion polymerization of butadiene and acrylonitrile, it has excellent oil resistance, high wear resistance, water resistance, air tightness and good bonding properties. NBR used in the range of -30 ℃ ~ 100 ℃, and the service life will decreases when it is used at 120 ℃. It is widely used in the production of a variety of oil-resistant rubber products, O-Ring, washers, casing, cable plastic materials, etc. it is also an essential elastic material in the automotive, aviation, oil and other industries.

The disadvantages of NBR are low temperature resistance, poor ozone resistance, low insulation performance and low elasticity.


2. FKM/FPM

FKM rubber is a synthetic rubber containing with fluorine atom. It has the characteristics of high temperature resistance, oil resistance, media resistance, and variety of chemical erosion resistance. And it has high chemical stability, which has the best performance for media resistant in one of the the elastomer at present. The application for temperature ranges is from -20℃ to 200℃. The low temperature ranges are from -15℃ to -20℃ for dynamic sealing. It’s mainly used for producing oil seals, O-Rings, back up rings, O-Ring cords, rubber sheets, sealing rings and so on. The disadvantages of viton is poor performance for low temperature resistance and density is large.

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