... 3,Material: silicone 4,OEM & ODM warmly welcomed Silicone Sealing Ring:1,Performance: FDA grade, oil resistance, friction resistance, anti- ... :ISO9001, SGS 5,Shipment terms: By sea, express or small truck 6,Usage: widely applied in faucets, toilets, fittings, pipes, ... showers and other industry accessories, and auto parts for sealing. 7, Materials: NBR; FKM; Silicone; Viton; EPDM; SBR ...