... 3,Material: silicone 4,OEM & ODM warmly welcomed Silicone Sealing Ring:1,Performance: FDA grade, oil resistance, friction resistance, anti-aging ... small truck 6,Usage: widely applied in faucets, toilets, fittings, pipes, showers and other industry accessories, and auto parts for sealing ... sizes are available upon request(OEM & ODM products warmly welcomed) rubber ring