... your option, including Buna-N (NBR), HNBR, VITON, Silicone, FluoroSilicone, EPDM, Teflon, Natural Rubber, BUTYL, SBR, Neoprene, HYPALON, etc.Our Company is ... growth of various plant Association. In addition to marking our parts, but also according to the actual requirements of production, special ... DVGW certification and British WRAS (WRC) drinking water standard certification. Silicone Rubber O-Ring