Description
LOCTITE® 660 is designed for the bonding of cylindrical fitting parts, particularly where bond gaps occurs without the need for remachining. The product cures when confined in the absence of air between close-fitting metal surfaces and prevents loosening and leakage due to shock and vibration. LOCTITE 660 exhibits excellent gap cure characteristics and is also suitable for retaining shims.
- Pack size: 50 ml bottle (Loctite no. 267328)
- Also available as: 50 ml tube
Application
- Ideal for repairing worn parts without remachining
- Enables re-use of worn bearing seats, keys, splines or tapers
- Suitable for retaining shims
Characteristics
- Thixotropic
- Gap Filling
- Strength: High Strength
Technical specifications
| Agency Approvals / Specifications | NSF P1 |
| Application Method | Manual |
| Colour | Grey: Silver |
| Cure Type | Anaerobic Cure |
| Fixture Time | 15.0 min. |
| Gap Fill | 0.25 – 0.5 mm |
| Operating Temperature | -65.0 – 300.0 °F (-55.0 – 150.0 °C ) |
| Physical Form | Paste |
| Shear Strength, Steel | 23.0 N/mm² (3335.0 psi ) |
| Substrates | Metal: Steel |
| Technology | Acrylic |
| Viscosity | 250000.0 mPa·s (cP) |
Hazard Information (CLP)

Signal word: Warning.
Hazard Statements
- H317: May cause an allergic skin reaction.
- H319: Causes serious eye irritation.
- H335: May cause respiratory irritation.
- H413: May cause long lasting harmful effects to aquatic life.
Precautionary Statements
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.
- P337+P313: If eye irritation persists: Get medical advice/attention.
Additional Labeling
No additional information.
Storage and Disposal
- No special requirements when used properly.
Henkel AG & Co. KGaA, Henkelstr. 67, 40589 Düsseldorf, GERMANY, +49 211 7970, [email protected], www.henkel.com






emma_paris –
It completely solved my problem! Very satisfied, better than expected. Better than anything else I’ve tried before. Perfect for my needs; I’m very satisfied.
Aurélie I. –
Very satisfied, better than I expected. A friend recommended it; I’m very happy with the purchase.
Dominik –
Really good value for money. Everything perfect, would buy again. Durable product. Arrived on time.
Luisa –
A friend recommended it; I’m very happy with the purchase. No unpleasant smell, which I really appreciate. I’ve been using it for 2 weeks and I already see results! The quality pleasantly surprised me.
Jonathan H. –
Impeccable quality. Clear recommendation.
manon_b –
It completely solved my problem!
jana_ber –
Very effective; I noticed a change in just one week. The quality pleasantly surprised me. I’ve been using it for 2 weeks and I already see results!
Manon M. –
Easy to use, without making a mess. Looks even nicer in real life. A friend recommended it; I’m very happy with the purchase.