Developed by The Boeing Company for lubrication and protection of aircraft components. It is a combination of solvents, lubricants, & waxes designed for penetration, moisture displacement, lubrication & protection. It dries to a thin waxy film that clings to metal for months. It will loosen rusty and corroded parts and is safe on paints, plastics, & vinyls. Use RustFree to quickly remove rust, corrosion and stains from virtually any surface, including: steel, cast iron, stainless, fiberglass, chrome, tile, porcelain, vinyl, cloth and more. Use Boeshield T-9 after cleaning with RustFree to protect bare metal surfaces.