NBR has excellent oil resistance. In typical NBR structure, trans-formation accounts for about 78%. Because the molecular chain structure of NBR contains cyano, its oil resistance (such as resistance to mineral oil, liquid fuel, animal and vegetable oil and solvent) is better than that of natural rubber, neoprene and styrene-butadiene rubber. Compared with other rubbers, NBR has a wider range of service temperature, and its long-term service temperature is 120 ℃. At the same time, NBR has good low temperature resistance, with a minimum glass transition temperature of - 55 ℃. [1]