LOCTITE® 660 is designed for the bonding of cylindrical fitting parts, particularly where bond gaps can approach 0.50 mm (0.02 in.). The product cures when confined in the absence of air between close fitting metal surfaces and prevents loosening and leakage from shock and vibration. This product possesses excellent gap cure characteristics. Typical applications include restoring correct fits on worn shafts, spun beraings, and damaged keyways.
FEATURES AND BENEFITS
- Used for repairing worn coaxial parts without re-machining.
- Prevents loosening: It fills all gaps between the cylindrical components and cures into a hard thermoset plastic. This unitizes the assembly and prevents loosening and leakage from shock and vibration.
APPLICATION
Retaining
PRODUCT CHARACTERISTICS
Technology | Acrylic |
Chemical Type | Urethane methacrylate |
Appearance (uncured) | Metallic Grey PasteLMS |
Fluorescence | No |
Components | One component – requires no mixing |
Viscosity | High |
Cure | Anaerobic |
Secondary Cure | Activator |
Application | Retaining |
Strength | High |
TYPICAL PROPERTIES OF UNCURED MATERIAL
Specific Gravity @ 25 °C | 1.13 |
Flash Point – See SDS |
|
Viscosity, Brookfield – HBT, 25 °C, mPa·s (cP)
| Spindle TB, speed 0.50 rpm, Helipath 1,000,000 to 2,000,000LMS Spindle TB, speed 5.00 rpm, Helipath 150,000 to 350,000LMS |
Viscosity, Cone & Plate, 25 °C, mPa·s (cP) | Shear rate 129 s -1 400 to 600 |
TYPICAL PROPERTIES OF CURED MATERIAL
Physical Properties: | |
Coefficient of Thermal Expansion, ASTM D 696,K^-1 | 80×10^-6 |
Coefficient of Thermal Conductivity, ASTM C 177, W/(m·K) | 0.10 |
Specific Heat, kJ/(kg·K) | 0.3 0 |
Elongation, at break, ASTM D 412, % | <2 |
Adhesive Properties | |
After 24 hours @ 22 °C Compressive Shear Strength, ISO 10123 Steel pins and collars | N/mm² ≥17.20 LMS (psi) (2490) |
