RustSeal is a superior one part, completely non-porous, ready-to-use, high-solid content, rust preventative coating that is actually strengthened by exposure to moisture. It is impervious to road salts and most every chemical. Flows out to a beautiful, rock-hard, tough coating that is resistant to chipping or scratching. These exceptional properties make RustSeal specifically formulated to prevent corrosion and stop rust. Completely seals metal surfaces, blocks all pores and prevents penetration of moisture, oxygen, and water vapor.