Thread sealants prevent leakage of gases and liquids from pipe joints. All such joints are considered to be dynamic due to vibration, changing pressures or changing temperatures. Loctite anaerobic sealants cure to insoluble tough plastic thread fillers which prevent leakage regardless of the torque applied.

Threadlockers are single component anaerobic which completely fill the microscopic gaps between interfacing threads. They polymerize to a tough solid when they come into contact with metal in the absence of air.