Used to lubricate faucets and help stems to turn smoothly. Water resilient and oxidation resistant. Resistant to most harsh chemicals. Does not contain petroleum. 95% silicone and safe for nitrite/rubber o-rings. Retains its consistency in temperatures from -40 deg. to 400 deg. F. Odorless scent makes this product easy to work with during application. Specified by many original equipment manufacturers， especially when ceramic stems and cartridges are involved.