... ,MOQ:5000pcs 3,Material: silicone 4,OEM & ODM warmly welcomed Colored Silicone O Rings:1,Performance: FDA grade, oil resistance, friction ... faucets, toilets, fittings, pipes, showers and other industry accessories, and auto parts for sealing. 7, Materials: NBR; FKM; Silicone; Viton; EPDM ... sizes are available upon request(OEM & ODM products warmly welcomed) Colored Silicone O Rings