... product are molded rubber parts products like O rings, rubber seals, rubber band, oil seal,water seal and rubber gaskets etc. Itemsoft ... NSF, WRAS, UL, TZW, W270, ACS, FDAMaterial100% pure silicone o-ringMaterial usage is based on the final product ... High and low temperature resistance, oil resistance, anti-ozone and aging, wearing Various sizes & colors as following: high quality automotive rubber ...