Henkel Adhesive Technologies

Henkel Adhesive Technologies

Retaining compounds


High strength, large gapfilling for bonding cylindrical parts

This very high viscosity, high strength retaining compound, ideal for use on badly worn seats, keys, splines, bearings or tapers without re-machining. It’s also suitable for retaining shims.  

All marks used are trademarks and/or registered trademarks of Henkel and its affiliates in the US, Germany, and elsewhere.

Part no. (SKU/IDH)

LOCTITE® 660, 50 ml Tube



If you want a product that enables re-use of worn bearing seats, keys, splines or tapers, LOCTITE® 660 is for you. This high strength retaining compound is designed for the bonding of cylindrical fitting parts, particularly where bond gaps occur – and without the need for re-machining. It’s also suitable for retaining shims. You can expect excellent gap cure characteristic.

Agency approvals / certificates / specifications:


Application method:



Press Fitting,Repairing,Retaining



Cure type:

Anaerobic Cure

Fixture time:

15.0 min.

Gap fill:

0.25 mm - 0.5 mm

Key characteristics:

Gap Filling,Strength: High Strength,Thixotropic

Operating temperature:

-65.0 °F - 300.0 °F (-55.0 °C - 150.0 °C)

Physical form:


Recommended for use with:

Metal: Steel

Shear strength, Steel:

23.0 N/mm² (3335.0 psi)


250000.0 mPa·s (cP)

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