O-Ring, Oil Seal, Gasket, U-Ring, Quad-Ring, Glyd-Ring, Step Seal, Mechanical Seal, Extrusion Seals, Rotating Seals and wearable ... (NBR), HNBR, VITON, Silicone, FluoroSilicone, EPDM, Teflon, Natural Rubber, BUTYL, SBR, Neoprene, HYPALON, etc.Our Company is committed to providing customers ... DVGW certification and British WRAS (WRC) drinking water standard certification. SBR O-Ring