Description
Loctite 518 is an anaerobic gasketing material designed for use on rigid iron, aluminum, and steel flanged mating surfaces. It cures when confined in the absence of air between close-fitting metal surfaces. Fixture time 25 min
- Volume: 50ml cartridge (Loctite no. 2069176)
- Also available in: 25ml cartridge
Application
- 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
- 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
- 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
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






Delphine B. –
Very effective; noticed a change after just one week. Pleasant to use at home.
Bianca D. –
Pleasant to use at home. Very effective; I noticed a change in just one week. Very satisfied, better than expected. Feels nice to use at home.
Benedikt D. –
Quality is excellent. Perfectly packaged. Good fit and quality.
gabriel_fr –
Great item. Practical and useful. Easy to assemble.
Benedikt –
Super practical.
Ludovica O. –
Very fast delivery, thank you. Solved my problem completely!