Henkel LOCTITE 222 Low Strength Purple Threadlocker

Henkel LOCTITE 222 is a specialized, purple, low-strength anaerobic adhesive designed for the locking and sealing of threaded fasteners that require easy disassembly. Firstly, this product is the ideal solution for small diameter screws, typically those under 6.35 mm (1/4 inch) in size. Because it provides a controlled bond, it effectively prevents fasteners from loosening due to vibration in assemblies like pumps, gearboxes, and presses. Consequently, maintenance teams rely on this purple formula for precision components where over-tightening or permanent bonding must be avoided.

Technical Performance and Chemical Properties

In addition to its specialized strength, LOCTITE 222 features an anaerobic cure technology that hardens only when confined between metal surfaces. It offers a reliable fixture time of approximately 20.0 minutes. Regarding its physical properties, the liquid is thixotropic, which means it resists migration and dripping after application to the part. Furthermore, the adhesive performs consistently across a wide temperature range from -55.0 °C to 150.0 °C. Therefore, this threadlocker serves as a perfect choice for adjustment screws and set screws that operate in varying environmental conditions.

Material Compatibility and Serviceability

Specifically, the manufacturer recommends this product for use on all metals, including passive substrates such as aluminum or brass. Because the adhesive is low strength, you can disassemble parts easily using ordinary hand tools for routine service and maintenance. Moreover, the formula is fluorescent under UV light, allowing for quick quality control inspections to ensure the product was applied correctly. As a result, users achieve a secure fit without the risk of shearing small or soft-metal screws during later removal.

Additionally, this no-mix liquid has a viscosity of 1,200.0 mPa·s, which ensures easy application through manual or automated dispense systems. The breakaway torque on M10 steel bolts is 6.0 N·m, providing just enough resistance to stop accidental loosening while remaining removable.

Common Industrial Applications

Because of its gentle yet effective bond, Henkel LOCTITE 222 appears in many delicate engineering sectors. For example, technicians frequently use it on countersunk head screws, calibration equipment, and electronic housing fasteners. Finally, the combination of low-strength chemistry and thixotropic behavior ensures that your precision assemblies remain exactly where you set them. This makes it a top-tier selection for any project that prioritizes adjustment accuracy and easy maintenance access.