J-B Weld Perma-Lock 0.44 Oz. Red ThreadlockerJ B Weld Threadlockers provide a reliable and superior lock and seal for threaded fasteners. Ideal on all mechanical parts, body assemblies, and hundreds of other applications to prevent loosening of fasteners from shock and vibration. J B Weld Perma lock High Strength Threadlocker is ideal for heavy duty applications requiring resistance to severe shock and vibrations. Heating and hand tools are required to separate parts. Great for: rocker arms,