Loctite threadlockers loctite 135281 loctite 2701 is formulated 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 from shock and vibration loctite 2701 is particularly suited for use on inactive substrates andor where maximum resistance to hot oil is required loctite 135281 2701 threadlocker high strength chromated surfaces 50ml