... Quick supply 2. Different colors and sizes 3. Good quality, best price 4. Offer OEM O ring Gasket We specialize in ... or follow the color codeAdvantageGood Ozone resistance, aging resistance, high/low temperature resistance, acid/alkali resistance, weather resistance, abrasion ... , TS16949, NSF, WRAS, UL, TZW, W270, ACS, FDAMaterial100% pure silicone o-ringMaterial usage is based on the final product ...