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LOCTITE® 660™
LOCTITE® 660™ is a high-strength, quick metal retaining compound designed for bonding cylindrical metal assemblies in the automotive, manufacturing, and machinery industries. It is capable of withstanding extreme conditions, creating a durable, long-lasting bond.
- Manufacturer: Henkel
- Product Line: LOCTITE® Retaining Compounds
- Product: LOCTITE® Large Gap Retaining Compounds
- Industries: Adhesives | Building & Construction | Maintenance, Repair, Overhaul | Metal Processing & Fabrication
- Authorized Countries: Canada | Mexico | United States
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Overview
LOCTITE® 660™ high-strength retaining compound is recommended for use as a powerful adhesive for applications that require exceptional bond strength and durability. It is specifically formulated to bond cylindrical metal assemblies, providing a secure, permanent bond that withstands extreme conditions. It is particularly effective for joining parts that have loose fits or cylindrical interference fits, as it fills gaps between mating surfaces. This anaerobic product possesses gap cure characteristics, bonding gaps up to 0.50 mm when confined in the absence of air, with the rate of cure depending on the bondline gap.
Specifications
Chemical Type: Urethane methacrylate
Appearance (uncured): Metallic grey paste
Fluorescence: No
Components: One component – requires no mixing
Viscosity: High
Viscosity @ 25°C, mPa·s (cP), Spindle TB, speed 0.5 rpm: 1,000,000 to 2,000,000
Viscosity @ 25°C, mPa·s (cP), Spindle TB, speed 5.0 rpm: 150,000 to 350,000
Cure: Anaerobic
Secondary cure: Activator
Strength: High
Specific Gravity @ 25°C: 1.13
Specific Heat, kJ/(kg·K): 0.3
Elongation, at break, ISO 37, %: <2
Features & Benefits
Quick metal retaining compound and threadlocker
High strength
Fills bond gaps up to 0.5 mm
Maximum strength at room temperature
Cures when confined in the absence of air
Prevents loosening and leakage from shock and vibration
Robust curing performance
High viscosity
Prevents metal fretting and corrosion
Anaerobic
Non-running
Problems Solved
Backlash in worn assemblies
Loosening and leakage from shock and vibration
The need for remachining to repair equipment
Inability of adhesive to fill difficult-to-reach cracks and crevices
Applications
Bonding of cylindrical parts
Restoring correct fits on worn shafts, spun bearings, and damaged keyways
Locating pins in radiator assemblies
Locking bushings and sleeves into housings and on shafts
Repairing worn machine parts
Related Applications
Adhesives
Building & Construction
Maintenance, Repair, Overhaul
- Assembly & Run-in
- Bearings
- Electric Motors
- Gear Boxes
- Machining
- Noise, Vibration, Harshness
- Pumps
- Threads & Thread Connections
- Valves, Packings, Seals & O-Rings
Related Chemistries
Related End Markets
Maintenance, Repair, Overhaul
- Facility Infrastructure
- General Industrial
- Heavy Industry
- Metal Processing & Fabrication
- Transportation
Related Functions
Adhesives
Building & Construction
Maintenance, Repair, Overhaul
Metal Processing & Fabrication
Related Technologies
Adhesives
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