LOCTITE® 243 - 50 ml Bottle 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, aluminum, and plated surfaces. Suitable for use on most oil-coated, 'as-received' fasteners without 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 oil-coated, 'as-received' fasteners without cleaning
- Can be disassembled with ordinary hand tools for easy service and maintenance
- NSF/ANSI 61 certified
Documents and Downloads
Safety Data Sheets and RoHs
- 250 ml Bottle - IDH 1335868
- 50 ml Bottle - IDH 1335884
- 1 l Bottle - IDH 1335903
- 5 ml Blister card - IDH 1370535
- 24 ml Blister card - IDH 1370559
- 10 ml Bottle - IDH 1918244
LOCTITE® 243, 250 ml Bottle 1335868 en-FR
IDH:
1335868
EAN:
5010266000800
Size Case: 250 ml Bottle
LOCTITE® 243, 1 l Bottle 1335903 en-FR
IDH:
1335903
EAN:
5010266000831
Size Case: 1 l Bottle
LOCTITE® 243, 5 ml Blister card 1370535 en-FR
IDH:
1370535
EAN:
5010266001234
Size Case: 5 ml Blister card
LOCTITE® 243, 24 ml Blister card 1370559 en-FR
IDH:
1370559
EAN:
5010266001296
Size Case: 24 ml Blister card
LOCTITE® 243, 10 ml Bottle 1918244 en-FR
IDH:
1918244
EAN:
5010266009094
Size Case: 10 ml Bottle
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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. ) |
| 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) |
How to
Step by Step Guide
How to apply LOCTITE 243
1. Preparation - Cleaning
LOCTITE® 243 is suitable for use on most "as-received" fasteners with light coatings of corrosion prevention oils without cleaning. However, for heavily oiled or contaminated fasteners, it is recommended to use LOCTITE® SF 7063, SF 7064, or SF 7070 to degrease and clean surfaces prior to applying LOCTITE 243 threadlocker.
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
Apply several drops of liquid threadlocker down the sides of the blind hole filling the lower third. Apply several drops to the bolt.
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.