LPS 3 is a advanced rust inhibitor that forms a soft waxy film for protection and lubrication. A rust inhibitor is a chemical compound that, when added to a liquid or gas, decreases the corrosion rate of a material. LPS 3 does not contain chlorinated solvent or silicone making it safe on most surfaces. This product inhibits rust and corrosion and protects steel parts indoors for up to 2 years.