Description
Loctite 518 is a medium-strength anaerobic gasket with excellent contamination tolerance. It cures when confined in the absence of air between close-fitting metal surfaces. Fixture time 25 min!
- Pack size: 25 ml syringe (Loctite no. 2069175)
- Available as well in 50 ml cartridge, 300 ml cartridge
Application
- Typical applications include sealing close-fitting joints between rigid metal faces and flanges
- It is also used as a formed-in-place gasket on rigid flanged connections, e.g. transmissions and motor housings.
Characteristics
- Semi-flexible, medium-strength anaerobic flange gasket
- It fills gaps up to 0.25mm and forms a flexible, chemical-resistant seal that will not tear or decay. Parts disassemble easily, even after extended service
- Easy to automate
- Reduces process costs – eliminates manual assembly of conventional gaskets
- NSF P1 Reg. No. 123758
- For active and inactive rigid metal flanges
- Cures through minor surface contamination
- Adapts to flange surface irregularities and gaps up to 0.25 mm
- Gel-type consistency
- Seals instantly against low pressure
- Reduces inventory costs – no need for large inventory of cut gaskets
- Resists high pressure when fully cured
- No compression set or misaligned gaskets
- Size: 25ml cartridge
- Also available in: 50ml cartridge
Technical Information
| Colour | Red |
| Fixture Time | 25.0 min. |
| Lab Shear Strength | 7.5 N/mm² |
| Specific Gravity, @ 25.0 °C | 1.1 |
| Storage Temperature | -40.0 °C |
| Substrates | Aluminium |
| Viscosity, Brookfield – HBT, @ 25.0 °C Spindle TC, speed 0.5 rpm, Helipath | 3000000.0 – 4500000.0 mPa·s (cP) |
| Viscosity, Brookfield – HBT, @ 25.0 °C Spindle TC, speed 5.0 rpm, Helipath | 500000.0 – 1000000.0 mPa·s (cP) |
Label Elements (CLP)

Signal word: Warning
Hazard Statements (H-codes)
- H315: Causes skin irritation.
- H317: May cause an allergic skin reaction.
- H319: Causes serious eye irritation.
- H335: May cause respiratory irritation.
- H412: Harmful to aquatic life with long lasting effects.
Precautionary Statements (P-codes)
For Consumer Use Only:
- 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 national regulation.
Prevention:
- P261: Avoid breathing vapors.
- P273: Avoid release to the environment.
- P280: Wear protective gloves.
Response:
- P333+P313: If skin irritation or rash occurs: Get medical advice/attention.
- P302+P352: IF ON SKIN: Wash with plenty of soap and water.
- P337+P313: If eye irritation persists: Get medical advice/attention.
Other Hazards
None if used properly.
This mixture does not contain any substances in a concentration ≥ the concentration limit for depiction in Section 3 that are assessed to be a PBT, vPvB, or ED.
Henkel AG & Co. KGaA, Henkelstr. 67, 40589 Düsseldorf, GERMANY, +49 211 7970, [email protected], www.henkel.com






Franziska T. –
Great product, worth every cent. Solved my problem completely! I’ve been using it for 2 weeks and already see results!
giacomo_s –
Exactly as in the pictures. Everything as described. Product as expected.
maxime88 –
Simple and convenient.
Carla –
Perfect for my needs, couldn’t be happier. I noticed the difference right away!
giulia88 –
A friend recommended it and I’m so glad I ordered.