Loctite® 290 is a medium to high strength threadlocker designed for locking and sealing preassembled fasteners. Its low viscosity allows it to wick into threads by capillary action, eliminating the need for disassembly prior to application. It prevents loosening and leakage from shock and vibration and is ideal for sealing porosity in welds, castings, and powdered metal parts.
Loctite® 290 is a one-component, anaerobic adhesive that cures in the absence of air between close-fitting metal surfaces. It is specifically formulated for locking and sealing threaded fasteners that are already assembled. The product’s low viscosity enables it to penetrate between engaged threads, making it suitable for applications where disassembly is not practical. Once cured, it provides a medium to high strength bond that resists vibration, shock, and leakage. Loctite® 290 is also effective in sealing porosity in welds and castings, enhancing the integrity of metal components.
Colour: Green
Viscosity: 20 to 55 mPa·s at 25°C
Breakaway Torque: 10 N·m (M10 steel bolts)
Prevail Torque: 29 N·m (M10 steel bolts)
Service Temperature Range: -55°C to +150°C
Fixture Time: 20 minutes on steel
Full Cure Time: 24 hours
Fluorescence: Yes, under UV light
Recommended for: Steel, stainless steel, and brass
Packaging Sizes: 10 ml, 50 ml, 250 ml bottles
Primary Chemistry: Methacrylate ester
Fasteners loosening due to vibration Leakage through threaded assemblies Corrosion in threaded metal components Difficulty in applying threadlocker to preassembled parts Porosity in welds and castings leading to leaks
Securing preassembled fasteners in instrumentation and electrical connectors Preventing loosening of set screws and adjustment screws Sealing porosity in welds, castings, and powdered metal components Locking threaded fasteners in pumps, gearboxes, and presses Preventing leakage and corrosion in threaded assemblies Applications requiring post-assembly threadlocking without disassembly Maintenance and repair operations in industrial equipment Automotive and heavy machinery threaded components Electrical and electronic equipment assemblies
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