Can replace or be used as a dressing for conventional gaskets. Will not shrink due to solvent evaporation. Eliminates the need to re-torque compressible mechanical gaskets. Can be used on vacuum pump flanges, fuel pumps, water pumps, gearbox covers, automotive and truck axle covers. Once cured, has an operating temperature range of -65°F to 300°F. "515 & 518 Loctite® functional equivalent"