... (with Chlorinated butyl rubber O ring),-- Suit medium: cold water, hot water, compressed air, gas, oil etcSealing ring material:Option ... consumption, not oil-resistant. Suitable for drinking water, tap water, hot and cold water, sanitary air and compressed gas. Option 2. ... consumer, not oil-resistant. Suitable for drinking water, tap water, hot and cold water, sanitary air and compressed gas. Option 3: ...