748010 50 Ml Bottle

Loctite 640 is a high-strength anaerobic adhesive designed to secure slip-fit assemblies on Harley-Davidson motorcycles. It provides up to 3000 PSI of holding power, making it indispensable for securing bearings, bushings, valve guides, and liners. Beyond simple retention, this product can restore the fit to worn or out-of-tolerance assemblies, extending the life of expensive engine and chassis components. The formula cures in the absence of air between close-fitting metal surfaces to create a rigid, permanent bond. Due to its exceptional strength, removal of parts treated with Loctite 640 requires specialized tools and the application of heat.