Loctite® 542 is designed for the tightness and braking of metal pipes and fittings as well as for other assemblies of cylindrical metal parts. The product polymerizes when it is confined in the absence of air between metallic surfaces with a low game. It has the function of preventing loosening and leaks due to shocks and vibrations. The thixotropic character of loctite 542 avoids migration of the product after application on the parts.