Bondloc b638 retainer is designed to give high strength retention under cyclic loading it can retain its full strength and not suffer fatigue under load stress it is a cylindrical parts supplement suited to structural components such as cylindrical parts under dynamic load keys splines even structural tubing with close tolerance fit specifications resin urethane acrylate colour green fixture speed no activator 5 mins fixture speed with activator 85cshelf life 12 months min specific gravity 108m