Description
LOCTITE® 243 is a general purpose threadlocker that provides a medium strength bond. It is proven to be tolerant of minor contamination due to industrial oils, e.g., motor oils, corrosion prevention oils and cutting fluid.
- Pack size: 1 l bottle (Loctite no. 1335903)
- Available as well in 5 ml, 10 ml and 50 ml bottle, 250 ml bottle
Application
- LOCTITE 243 works on all metals, including passive substrates such as stainless steel, aluminium and plated surfaces.
Characteristics
- Prevents loosening on vibrating assemblies, e.g. pumps, gear boxes or presses
- Works on all metals, including passive substrates (e.g. stainless steel, aluminium, plated surfaces)
- Proven to tolerate minor contamination by industrial oils, e.g. engine oils, corrosion prevention oils and cutting fluids
- Permits disassembly with hand tools for servicing
- P1 NSF Reg. No.: 123000
Technical specifications
| Application Temperature | -55.0 – 180.0 °C |
| 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. |
| Physical Form | Liquid |
| Prevail Torque, M10 Steel Nuts/Bolts | 5.0 N·m (40.0 in./lb. ) |
| Specific Gravity, @ 23.0 °C | 1.08 |
| Viscosity, Speed 20 RPM | 2150.0 mPa·s (cP) |
Hazard Identification (CLP)

Signal word: Warning
Hazard Statements (H-Sets)
- H317: May cause an allergic skin reaction.
- H412: Harmful to aquatic life with long lasting effects.
Prevention (P-Sets)
- P273: Avoid release to the environment.
- P280: Wear protective gloves.
Reaction (P-Sets)
- P333+P313: If skin irritation or rash occurs: Get medical advice/attention.
Additional Labeling (EUH-Statements)
- EUH208: May cause allergic reactions.
General Safety Advice and Disposal
- P101: If medical advice is needed, have product container or label at hand.
- P102: Keep out of reach of children.
- P501: Dispose of contents/container in accordance with local regulations.
Other Relevant Information
- Contains Tetramethylendimethacrylate, Maleic acid, and 2′-Phenylacetohydrazide.
Henkel AG & Co. KGaA, Henkelstr. 67, 40589 Düsseldorf, GERMANY, +49 211 7970, [email protected], www.henkel.com






Massimo U. –
Product arrived well packaged. Impeccable quality. Great service and product. Works just as advertised.
Julian –
Top product, would definitely recommend.
Josephine –
A friend recommended it to me and I’m thrilled with the purchase. Super fast delivery, thank you. Very satisfied, better than I expected. I noticed a difference after a short time!
Charlotte O. –
A friend recommended it to me and I’m thrilled with the purchase. Easy to use, without making a mess. Perfect for my needs; I’m very satisfied.
Amelia –
Packaging was slightly damaged, but the product is excellent. Easy to use, without making a mess. The quality surprised me in a good way.
James –
Perfect job, thanks. Everything excellent.
Charlotte –
A friend recommended it; I’m very happy with the purchase. No unpleasant smell, which I really appreciate.
Logan –
Simple to install. Great customer support. Packaging was excellent.
charlotte_de –
Not too big, not too small, perfect. Very effective; I noticed a change in just one week. I was skeptical, but now I’ll order regularly. Excellent product, worth every cent.
Lucie L. –
Easy to use, without making a mess. Looks even nicer in person.
anthony99 –
Price matches the quality. Practical and functional. Received quickly.
christophe_fr –
Durable product. Everything perfect and fast. As expected, top-notch. Good customer service.
Ethan –
Super practical.
Philipp –
Excellent workmanship.
franziska_b –
Pleasant to use at home. Not too big, not too small, perfect.