LOCTITE® LB 8711 (known as LOCTITE PENETRATING OIL) is a brown, thin, solvent-based, liquid aerosol lubricant, standard "tool" for disassembly and assembly of machinery, piping, valves and other metal fitted parts. As a lubricant it deposits a thin, oily coating that displaces water and moisture under the most severe conditions. It also prevents rust and allows for smooth movement of metal parts.