Loctite Loctite 638 Adhesive

The Loctite offers a Loctite series of surface insensitive, high strength, high temperature anaerobic thread locking material which cures when confined in the absence of air between close fitting metal surfaces and prevents loosening and leakage of threaded fasteners. It is suitable for heavy duty applications such as bolts used in transmissions, construction equipment or railroad assemblies where resistance to heavy shock, vibration and stress level is required.

Made up of dimethacrylate ester
Viscosity is high
Used for retaining

DVGW (EN 751-1): NG-5146AR0619,NSF P1 Reg. No 123010,WRAS (BS 6920): 0511518