... . seal ring1)We have kinds of material : NBR,HNBR,EPDM,SILICONE,VITON,NR,FLS,FFPM,PU,PTFE etc.2) High temperature ... , no poison and no smell3)It's an ideal solution for sealing application where there are high temperatures and corrosive liquids ... by us is used in conglomerate applications. Manufacture and supply colorful Silicone Rubber Waterproof O shape ring