LOCTITE® 225 is a medium-strength brown liquid threadlocker with medium viscosity. Designed for locking and sealing metal fasteners, it prevents loosening from shock and vibration while allowing disassembly using standard hand tools.
LOCTITE® 225 is a one-component anaerobic adhesive that cures in confined spaces between close-fitting metal surfaces and the absence of air. It’s perfect for assemblies requiring reliable bonding with eventual disassembly. Its liquid form ensures effective penetration into threads and reduces messy application.
Colour is brown, and the adhesive is liquid with medium viscosity. Viscosity ranges between 17 500–52 500 mPa·s at 2.5 rpm and 5 900–10 300 mPa·s at 20 rpm . Fixture time is approximately 50 minutes with full cure in 24 hours. The product performs reliably between –55 °C and +150 °C. It is available in 50 ml and 250 ml bottles.
Primary Chemistry: Methacrylate ester
LOCTITE® 225 helps stop threaded fasteners loosening from mechanical shock or vibration. It seals connections to prevent leaks or corrosion, reducing maintenance. The product replaces mechanical lock devices and ensures reliable, clean adhesive application without mess.
Ideal for locking and sealing threaded fasteners where medium-strength and eventual disassembly are required. LOCTITE® 225 works well on fasteners in industrial, maintenance, automotive and machinery assemblies. The liquid formula allows clean application, especially on vertical or overhead bolts.
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