Metlok Private Limited manufactures High Strength Thread Locker. Metlok Private Limited is an ISO 9001: 2000 certified company. High Strength Thread Locker or My-T-Lok®343 is high viscosity anaerobic adhesive designed for the locking and sealing of threaded fasteners of M12 or larger size. It cures when confined in the absence of air between close fitting metal surfaces and prevents loosening and leakage from shock and vibration. The High Strength Thread Locker is particularly suitable for applications where high tensile bolts are used for permanent locking. It is also used for locking of crown gear assembly bolts in differential gear boxes will be a typical application.