Loctite 620 – Retaining compound

LOCTITE 620 is a high-temperature, high-strength retaining compound designed to secure cylindrical metal components and fill gaps between close-fitting parts. It is particularly suitable for applications exposed to elevated temperatures and helps prevent loosening, leakage, and movement caused by vibration and thermal expansion.
LOCTITE 620 is commonly used for bearings, bushes, sleeves, shafts, rotors, and other cylindrical components where a strong, reliable bond is required. Its retaining action helps improve load distribution across the joint and can reduce the need for mechanical locking methods.
Key Features
High-strength retaining compound
Designed for high-temperature applications
Suitable for cylindrical metal assemblies
Helps prevent loosening and movement
Fills gaps between mating surfaces
Provides reliable resistance to vibration
Useful for repairing worn or loose fits
Suitable for industrial maintenance and assembly
Typical Applications
LOCTITE 620 is suitable for securing bushes, bearings, sleeves, shafts, gears, rotors, pulleys, and other cylindrical components. It is particularly useful where components experience vibration, thermal cycling, or elevated operating temperatures.
Benefits
Using LOCTITE 620 can improve the reliability of mechanical assemblies by creating a strong bond between mating metal surfaces. It can also help compensate for small clearances and provide a more uniform load distribution compared with traditional mechanical fastening methods.