Nitrile Butadiene Rubber (NBR) is a synthetic rubber copolymer of butadiene and acrylonitrile. It is known for its excellent resistance to oil, fuel, and chemicals, as well as its good mechanical properties. NBR is commonly used in applications requiring oil and fuel resistance, such as automotive seals, gaskets, hoses, and O-rings. It also finds use in industrial seals, gloves, and other molded rubber products.