LOCTITE® 243
This iconic threadlocker locks and seals metal nuts and bolts to prevent loosening due to shock and vibration. Medium-strength: removable with hand tools.
LOCTITE® 243 is a blue, general purpose threadlocker that provides a medium-strength bond. It works on all metals without primer, including passive substrates such as stainless steel, aluminum, and plated surfaces. Cures through most corrosion prevention oils and cutting fluids on “as-received” fasteners without aggressive cleaning.
- Prevents fastener loosening on vibrating assemblies, e.g. pumps, gear boxes or presses
- Works on all metals, including passive substrates
- Suitable for use on most ‘as-received’ fasteners without aggressive cleaning
- Can be disassembled with ordinary hand tools for easy service and maintenance
Technical Information
| Application method | Dispense gun, Dispense system, Manual |
| Application temperature | -55.0 – 180.0 °C (-65.0 – 360.0 °F ) |
| Applications | Threadlocking |
| Breakaway torque, M10 Steel Nuts/Bolts | ~26.0 N·m (230.0 in./lb. ) |
| Color | Blue |
| Cure type | Anaerobic cure |
| Fixture time | 10.0 min. |
| Key characteristics | Disassembly: removable, Fluorescent, General purpose, Oil tolerant, Primerless, Strength: medium strength, Thixotropic |
| Physical form | Liquid |
| Prevail torque, M10 Steel Nuts/Bolts | 5.0 N·m (40.0 in./lb. ) |
| Recommended for use with | Metal, Metal: passive metal |
| Specific gravity, @ 23.0 °C | 1.08 |
| Viscosity, Speed 20 RPM | 2150.0 mPa·s (cP) |