LOCTITE® 243 Blue Medium Strength Threadlocker
Features and Benefits
Available sizes:
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, aluminium, and plated surfaces. Suitable for use on most oil-coated, 'as-received' fasteners without cleaning.
- Prevents loosening on vibrating assemblies, e.g. pumps, gear boxes or presses
- Works on all metals, including passive substrates (e.g. stainless steel, aluminum, plated surfaces)
- Proven to tolerate minor contamination by industrial oils, e.g. motor oils, corrosion prevention oils and cutting fluids
- Permits disassembly with ordinary hand tools for easy service and maintenance
- P1 NSF Reg. No.: 123000
Documents and Downloads
Safety Data Sheets and RoHs
- Bottle 10.0/case - IDH 1311321
- Bottle 10.0/case - IDH 1311323
- Bottle 10.0/case - IDH 1311375
LOCTITE® 243, 250 ml Bottle 1311323 en-AU
IDH:
1311323
EAN:
6902545440942
Size Case: Bottle
Quantity: 10.0/case
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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. ) |
| Colour | 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) |
How to
Step by Step Guide
1. Preparation - Cleaning
It is recommended to use LOCTITE® SF 7063, SF 7064, or SF 7070 to degrease and clean surfaces prior to applying threadlocker adhesive.
2. Preparation - Activation
If cure speed is too slow due to passive metals (stainless steel, aluminum and plated metals) or low temperature (below 5°C), use activator LOCTITE® SF 7240 or LOCTITE® SF 7649 (see cure speed vs activator graph in the TDS).
3. Application
Apply liquid threadlocker to the engagement area. For manual dispensing, the use of a peristaltic handgun or the LOCTITE® Pro Pump is recommended to ensure a consistent application volume.
4. Application - Through Hole
Insert bolt and apply threadlocker to the exposed thread. Assemble nut and tighten to the correct/specified torque.
5. Application - Blind Hole
6. Assembly
Assemble and tighten. If several bolts are being assembled, torque them down to the correct value within the fixture.
7. Disassembly - Hand Tools
Disassemble with standard hand tools.
Hint
For the disassembly of corroded or seized parts use LOCTITE® LB 8040 Freeze and Release.
Frequently Asked Questions
What products can I use to prevent vibration loosening of parts? / How do I prevent vibration loosening and leak paths?
What temperatures can threadlockers/thread sealants/gasketing materials work up to?
Are threadlockers/sealants/gasketing materials resistant to fluids such as gasoline, diesel, engine oil, water, glycol, acids, alkalis, hydraulic fluid, etc.?
Can threadlockers be used as thread sealants? / Can thread sealants be used as threadlockers?
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.