General purpose, Nitrile Rubber, 85-95 °IRHD. Copolymer of acrylonitrile and butadiene. ASTM & ISO designation = NBR. ASTM D2000 line call-out: M4CH910, A25, B14, EF31, EO15, EO35, F16. Applications: Excellent resistance to petroleum based oils and fuels. Excellent compression set, tear and abrasion resistance. Good water resistance but poor against ozone and weather. |