Loctite 660 is a specialized retaining compound (shaft and housing glue) of Henkel – Loctite, often used to fix mechanical parts in the form of tubes – shafts (shaft – housing) when worn or with gaps.
Main information about Loctite 660:
Color: Silver.
Viscosity: High (paste-like), easy to fill gaps.
Gap filling ability: Up to 0.5 mm.
Fixture time: About 20 minutes on steel (normal steel), faster when used with activator Loctite 7471 or 7649.
Full curing time: 24 hours (at room temperature).
Heat resistance: -55°C to +150°C.
Application:
Repair and fix shafts – housings when there are gaps or abrasion.
Retaining coaxial parts in mechanics, engines, gearboxes.
Helps restore worn holes without reworking.
Advantages:
Fills large gaps that other retaining glues are difficult to ensure.
No need to weld or rework the part.
Creates a strong, anti-vibration, anti-corrosion bond.
👉 In summary, Loctite 660 is suitable for repairing worn machine parts (e.g. engine bushings, hubs, bearings, joints) without replacement or reworking.













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