Nitrile Butadiene Rubber (NBR)
NBR is the wildly used oil resistance compound nowadays. It has a great resistance to wear. The –CN contains in Acrylonitrile can affect physical characteristics other than oil resistance. The higher the Acrylonitrile content, the better the resistance to oil. However, the lower the acrylonitrile content, the better the resistance to low temperature. NBR is used at temperature between -25°C~100°C. The life time of rubber will shorten when temperature exceeds 100°C.
Advantage
- Great resistance to oil~100℃
- High strengthen (the special formula can reach higher than 20MPa)
- High tensile
- Good resistance to water
Disadvantage
- Not applicable to hydraulic oil with phosphoric ester
- Not applicable to the gear oil with extreme pressure additive
- Not resistance to hot water and fuel
- It is not aromatic hydrocarbon and chlorinated hydrocarbon resistance.
- Not applicable to polar solvent, such as ketone, ozone, Nitro compound, MEK and Chloroform