... oil seal,water seal and rubber gaskets etc. Itemsoft silicone o -ringDescriptionWidely used in bathroom product, valve, faucet, ... resistance, high/low temperature resistance, acid/alkali resistance, weather resistance, abrasion resistance, voltage resistance and insulating resistance ... WRAS, UL, TZW, W270, ACS, FDAMaterial100% pure silicone o-ringMaterial usage is based on the final product condition ...