Black Swan 4095 1 OZ Can Plumbers Grease Non-toxic Lubricator is a special combination of lithium soaps, solvent refined base stocks and additives. Formulated for many plumbing applications. Makes hard turning faucets work smoothly. Lubricates stems of faucets, valves, ballcocks etc. Waterproof. Because of the special additives, the metal parts are also protected against rust, oxidation and corrosion. Will not melt like ordinary grease. Temperature range use from -20°F to +250°F. Not for use on rubber or synthetic O-rings.