Blue, high viscosity, solvent-based, fast drying paste used to visually detect any movement in the adjustment of parts such as compression fittings, studs, nuts, parts and assemblies.LOCTITE SF 7414 is a blue, high viscosity, solvent-based fast drying paste used to visually detect any movement in the adjustment of parts. The product has been developed for use on compression fittings, studs, nuts, parts and assemblies after they have been set to the correct torque, tension or position, thus providing an inexpensive method for warranty protection. It demonstrates excellent adhesion to metals.