Black Swan Silicone Grease is a 90% pure silicone grease-like product. Composed of inert amorphous silica fillers and selected silicone fluids. Contains no petroleum additives. Formulated for many plumbing applications including making hard turning faucets work smoothly, and lubricating stems of faucets, valves, ballcocks, etc. Silicone Grease should be used where regular lithium based greases can’t. Silicone Grease works at higher temperatures (up to 450°F), can be used on rubber or synthetic O-rings and is more resistant to a wider range of chemicals. Directions For Use For best results clean and dry surfaces before application. Apply grease by hand or brush. Because each application may vary in chemical composition, pressure, flow velocity, etc., the Silicone Grease should be tested before adopting regular use.