Crouse-Hinds series STL and HTL thread lubricants inhibit corrosion on any metal-to-metal joint of electrical equipment. The lubricant can be used between any screw thread and its tapped opening, on any rotating shaft threaded or plain. STL thread lubricant is for use on the joints of electrical apparatus and control enclosures. Our HTL high temperature lubricant is for use on the threaded joints of lighting fixtures and the enclosures of any heat-producing apparatus or control product.