Loctite threadlockers loctite 135376 loctite 262 is designed for the permanent locking and sealing of threaded fasteners it cures when confined in the absence of air between close fitting metal surfaces and prevents loosening and leakage due to shock and vibration typical applications include the locking and sealing of large bolts and studs up to m25 the thixotropic nature of loctite 262 reduces the migration of liquid product after application loctite 135376 262 highmedium strength