Formulated with real copper and special lubricants, Castle® Torque Master™ is a superior anti-seize compound. It prevents seizing, galling, and pulling under the most adverse conditions. It provides a waterproof surface in any environment, and withstands extreme pressures in excess of 50,000 psi. Castle® Torque Master™ assures accurate torque and easy disassembly of all metals, including alloys of steel, aluminum, brass, and copper. Meets military Specs #A9070.