High Strength Retaining Compound
LOCTITE 660
Product category: Retaining Compounds
Data sheets
Technical
(1)
RoHS
(1)
Regulatory
(1)
Product information
- Description
- Technical specifications
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.
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Ideal for repairing worn parts without remachining
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Enables re-use of worn bearing seats, keys, splines or tapers
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Suitable for retaining shims
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P1 NSF Reg. No.: 123704
Agency Approvals / Specifications:
NSF P1
Color:
Gray: Silver
Gap Fill:
0.25 mm - 0.5 mm
Key Characteristics:
Gap Filling,Strength: High Strength,Thixotropic
Substrates:
Metal: Steel
Fixture Time:
15.0 min.
Viscosity:
250000.0 mPa·s (cP)
Shear Strength, Steel:
23.0 N/mm² (3335.0 psi)
Operating Temperature:
-65.0 °F - 300.0 °F (-55.0 °C - 150.0 °C)
Technology:
Acrylic
Applications:
Press Fitting,Repairing,Retaining
Application Method:
Manual
Physical Form:
Paste
Cure Type:
Anaerobic Cure
How to use
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.
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.
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.
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.
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.
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