Loctite 640 is a medium-strength, high-temperature retaining compound engineered to secure cylindrical assemblies such as bearings, bushings, and sleeves onto shafts or into housings. It delivers reliable holding power while still allowing for disassembly with standard hand tools when needed.
Formulated for demanding industrial and MRO applications, this anaerobic adhesive cures in the absence of air between close-fitting metal parts, providing excellent resistance to elevated temperatures and vibration. The 50mL bottle makes it well suited for shop use and production environments.