Nitrile Butadiene Rubber (NBR)

 Nitrile Butadiene Rubber (NBR) is a standard elastomer for many applications. Also known as Buna N, the “N” stands for acrylonitrile (ACN). The acrylonitrile segment of the molecular structure gives this material excellent tensile strength, abrasion resistance, and fuel/oil resistance. Increasing the ACN content can improve heat resistance and fuel impermeability. Nitriles outperform other elastomers due to high tensile strength, including excellent abrasion, tear and compression set resistance. This material also has low resistance to ozone and sunlight and is not an ideal application where weathering is the primary consideration. NBR performs well in Petroleum oils and fuels, silicone oils and greases, Ethylene glycol, some acids, and water below 212F.