... CR, ACM, NR.Color: According customer requirementAll O-Rings are made according to international standard.*ISO3601 *AS568A * ... . Several material f or oil seal, O-Ring and rubber gasket like: NBR, HNBR, CR, PDFE, EPDM, ... of O-Ring : O-type, E-type, U-type, V-type and so on, can make ... , O-Ring , Rubber seal, Rubber gasket, Rubber ring, Sealing ring, Sealing gasket. FKM RUBBER O-RING SEAL characteristics ...