... standard.*ISO3601 *AS568A *DIN3771 *BS1806All material are RoHS compliantSome compounds meet USA-FDA/NSF, England-WRC/WRAS, Germany-KTW/DVGW ... : 1. Several material f or oil seal, O-Ring and rubber gasket like: NBR, HNBR, CR, PDFE, EPDM, SILICONE, VITONE, ... of Oil seal, O-Ring , Rubber seal, Rubber gasket, Rubber ring, Sealing ring, Sealing gasket. FKM RUBBER O-RING SEAL characteristics are as ...