LOCTITE 660 High Strength Retaining Compound
Known as Loctite 660 Quick Metal, Press Fit Repair
Features and Benefits
- Ideal for repairing worn parts without remachining
- Enables re-use of worn bearing seats, keys, splines or tapers
- Suitable for retaining shims
- P1 NSF Reg. No.: 123704
|Agency Approvals / Specifications||NSF P1|
|Applications||Repairing, Retaining, Press Fitting|
|Cure Type||Anaerobic Cure|
|Fixture Time||15.0 min.|
|Gap Fill||0.25 - 0.5 mm|
|Key Characteristics||Thixotropic, Gap Filling, Strength: High Strength|
|Operating Temperature||-65.0 - 300.0 °F (-55.0 - 150.0 °C )|
|Shear Strength, Steel||23.0 N/mm² (3335.0 psi )|
|Viscosity||250000.0 mPa·s (cP)|
Step by Step Guide
1. Preparation - Cleaning
Use LOCTITE SF 790 to remove any old adhesive from parts. Use LOCTITE SF 7070 to degrease and clean surfaces prior to applying adhesive. For gaps larger than 0.5mm or worn out shafts, bearing seats or keyways, use LOCTITE metal-filled compounds to rebuild the surfaces.
2. Preparation - Activation
If cure speed is too slow due to passive metals (stainless steel, aluminum and plated metals) or low temperature (below 5°C), use LOCTITE SF 7649 activator. Allow to dry.
3. Application - For Slip-Fitted Assemblies
Apply adhesive around the leading edge of the male component and the inside of the female component. Assemble parts with a rotating motion to ensure good coverage. Wipe off excess adhesive.
4. Application - For Press-Fitted Assemblies
Apply 360 degree beads of adhesive to both bond surfaces at the leading edges of insertion or engagement, and assemble at high press-on rates. Wipe off excess adhesive.
5. Application - For Shrink-Fitted Assemblies
Apply the adhesive onto the male component, heat the female component to cause expansion for free assembly. Assemble components and allow temperatures to equiliberiate. Wipe of excess adhesive.
Apply localized heat to approximately 500°F/260°C and disassemble while hot.