HardCoat is a specially formulated, long-term corrosion inhibitor that offers multi year protection for metal parts stored indoors. When applied, it penetrates and forms a durable, dry film which acts as an effective barrier, sealing out moisture, air, acid, and alkali fumes as well as other corrosive elements. In addition it does not attract dust or dirt. The tinted transparent film allows for good visual application and inspection of the treated surface.