Devi Enterprises Nitrile Butadiene Rubber provides excellent resistance to petroleum oils as well as mineral and vegetable oil. It also offers strong resistance to heat aging - often a key advantage over natural rubber. Nitrile Butadiene Rubber is a family of unsaturated copolymers of 2-propenenitrile and various butadiene monomers (1,2-butadiene and 1,3-butadiene). Although its physical and chemical properties vary depending on the polymer’s composition of nitrile, this form of synthetic rubber is unusual in being generally resistant to oil, fuel, and other chemicals (the more nitrile within the polymer, the higher the resistance to oils but the lower the flexibility of the material).