Threadlocking — LOCTITE 222
Product and Function
LOCTITE 222 is a low-strength, anaerobic threadlocker designed for locking and sealing small threads where disassembly with standard hand tools is desired. The product is a single-component, low-viscosity, thixotropic liquid with a purple appearance and fluorescent properties under UV light. It cures anaerobically, meaning when confined between close-fitting metal surfaces in the absence of air.- Single-component, no mixing required
- Low strength — can be removed with standard hand tools
- Thixotropic formulation for reduced migration after application
- Fluorescent under UV for inspection
Typical Applications
LOCTITE 222 is particularly indicated for adjusting set screws, small-diameter threads, or threads with long engagement where easy disassembly without shearing the screw is necessary. The product is recommended for fasteners up to 6.35 mm (1/4 in) in diameter, as specified by the manufacturer.Application Advice
To achieve expected curing and performance, cleaning threads with a suitable cleaner is recommended, as well as using activators if curing is slow or with inactive metals, careful application without allowing the nozzle to touch the metal, and assembly after application. Henkel states a fixture time of approximately 20 minutes and documents strength development over 24–72 hours in technical curves. For disassembly, components are typically removed with standard hand tools; in rare cases, localized heating may be necessary (Henkel suggests approximately 250 °C in extreme cases).Specifications
- Product Name: LOCTITE 222
- Manufacturer: LOCTITE (Henkel)
- Manufacturer's Part Number: 231490
- Technology: Acrylic
- Chemical Type: Dimethacrylate ester
- Appearance (uncured): Purple liquid
- Fluorescence: Positive under UV light
- Components: One component
- Viscosity (Brookfield, 25 °C): Spindle 3, 2.5 rpm ≥3,500 mPa·s; Spindle 3, 20 rpm 900–1,500 mPa·s
- Viscosity (EN 12092 MV, 25 °C after 180 s): 135 mPa·s
- Curing: Anaerobic
- Application: Threadlocking
- Strength Class: Low
- Recommended Max Thread Diameter: 6.35 mm (1/4 in)
- Fixture Time: Approximately 20 minutes (according to manufacturer)
- After 24 hours @ 22 °C — Breakaway Torque (M10 steel): 6 N·m
- After 24 hours @ 22 °C — Prevail Torque (M10 steel): 4 N·m
- After 24 hours @ 22 °C — Breakloose Torque (M10, pre-stressed to 5 N·m): 14 N·m
- Compressive Shear Strength (ISO 10123): ≥2.5 N/mm²
- Storage (optimal): 8 °C to 21 °C
Content generated with the help of AI – we reserve the right for errors.
Contact HIN for further information about the product.