THREADLOCKERS, ADHESIVES, SEALANTS AND LUBRICANTS THREADLOCKERS, ADHESIVES, SEALANTS AND LUBRICANTS 00-13 FUNCTION DESIGNATION DESCRIPTION THREADLOCKER Loctite 222 Colour: opaque fluorescent purple Anaerobic product suitable or low-strength locking of retaining, adjustment and precision fasteners. All traces of lubricant must first be removed using the specific activator. Loctite 242 Colour: fluorescent blue Anaerobic product that prevents loosening of all types of nut and bolt; used in place of con- ventional mechanical locking systems. Used for medium-strength locking. All traces of lubricant must first be removed using the specific activator. Loctite 243 Colour:
opaque fluorescent blue Alternative product to 242; oil tolerant and so can used on lightly lubricated surfaces without prior use of activator. Loctite 270 Colour: fluorescent green Anaerobic product for high-strength locking of bolts and studs that do not normally require disassembly. Parts must be heated to approximately 80°C for removal. All traces of lubricant must first be removed using the specific activator. DEGREASERS AND ACTIVATORS Loctite 703 Product used for degreasing and cleaning parts prior to application of Loctite anaerobic prod- ucts; after drying, promotes uniform curing of threadlockers.
Loctite 747 Product used for specifically for treatment of passive metals prior to use of slow-cure anaer- obic threadlockers(series 5 and 6). Can also be used to increase cure speed at low temperatures or in applications where there is large gaps between the parts. SEALANTS (for faces and flanges) Loctite 510 Colour: red Super-rapid anaerobic sealant for sealing between rigid metal faces; can eliminate the need for conventional gaskets as it can fill gaps up to 0.4 mm. Does not shrink and therefore fasteners do not need re-tightening to specified torque values after curing. Loctite 542 Colour:
brown Anaerobic product used a liquid sealant for threaded fittings up to 3/4” gas; rapid curing and parts may be disassembled with ordinary tools. Loctite 554 Colour: red Anaerobic sealant and locking compound used for sealing cooling and industrial fluid circuits. Slow curing, also suitable for use on non-ferrous alloys. Loctite 572 Colour: white Anaerobic sealant and locking compound used for sealing pipes and threaded fittings up to 2" in diameter. Very slow curing on most metal surfaces. Loctite 573 Colour: green Thixotropic anaerobic product used for sealing joints between metal faces.
Ensures total contact between surfaces with maximum tolerance of 0.10 mm, filling micro- voids caused by flatness errors. Very slow curing on most metal surfaces and requires prior application of an activator. Loctite 576 Colour: brown Anaerobic product used a liquid thread sealant for large diameter threaded fittings (up to 2"). Very slow curing; also suitable for non-ferrous alloys and parts requiring subsequent removal.