... rubber o-ring 1. ISO9001/RoHS 2.working.temperature:-40c~+120c 3.material: Epdm,Nbr,Silicone,Fkm,etc ... . 4.AS568 in Shore A NBR Rubber o-ring:O-Ring ... . Several material f or oil seal, O-Ring and rubber gasket like: NBR, HNBR, CR, PDFE, EPDM, ... seal, O-Ring , Rubber seal, Rubber gasket, Rubber ring, Sealing ring, Sealing gasket. FKM RUBBER O-RING SEAL characteristics are ...