LOCTITE® Sleeve Retainer 640™ is a high temperature anaerobic adhesive that secures slip and press fit assemblies. Adds up to 3,000 psi holding power. Restores fit to worn or out-of-tolerance assemblies. Prevents surface corrosion. Works to 400 degrees F. LOCTITE Sleeve Retainer 640 Item# 37484 is the replacement for LOCTITE Retaining Compound 609™ Item #37483.