J-B WELD threadlockers provide a reliable and excellent 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 medium-strength threadlocker is ideal for fastener applications requiring easy disassembly with hand tools. | J-B Weld Perma-Lock Medium Strength Threadlocker | Size 6 ml