... without welding or bolting, can be widely used in cold and hot water supply, heating supply, fire protection, medicinal gas, ... resistant. Suitable for drinking water, tap water, hot and cold water, sanitary air and compressed gas. Option 2. EPDM(Ethylene-Propylene- ... -resistant. Suitable for drinking water, tap water, hot and cold water, sanitary air and compressed gas. Option 3: Nitrile rubber: oil ...