Loctite 262 Med-High-Strength Threadlocker - 50ml Bottle

Product Name

Loctite 262 Med-High-Strength Threadlocker - 50ml Bottle

Brief Description

Loctite 262 is a red, general-purpose, medium to high-strength, thixotropic, methacrylate-based anaerobic adhesive designed for the permanent locking and sealing of threaded fasteners. It cures in the absence of air between close-fitting metal surfaces, preventing loosening and leakage caused by shock and vibration.

Popular Applications & Uses

- Permanent locking and sealing of threaded fasteners.- Preventing loosening and leakage from heavy shock and vibration.- Ideal for large bolts and studs, typically up to M25 (1 inch) and M36.- Suitable for heavy-duty applications such as bolts in transmissions, construction equipment, or railroad assemblies.- Applications where migration of the liquid adhesive must be prevented due to its thixotropic nature.

Industries that Commonly Use It

- Aerospace/Defense- Automotive Service/Repair- Construction/Building Services- Electrical Services or Products (e.g., electric motors, electronics)- General Manufacturing- Government & Military (meets Mil-S-46163A specification for existing designs)- Industrial Maintenance and Repair- Medical Device/Prosthetics- Metal Fabrication (for all metal fasteners)- Transportation/Specialty Vehicle (e.g., railroad assemblies)

Special and Unique Features

- Fluoresces under UV light, allowing for easy quality control and inspection.- Thixotropic property reduces the migration of the liquid product after application to the substrate.- Tolerates slight contaminations of industrial oils, such as motor oils, corrosion prevention oils, and cutting fluids.- One-component adhesive, requiring no mixing.- Provides resistance to vibration and shock.

Key Properties

- **Chemical Type:** Dimethacrylate ester (Acrylic).- **Appearance (uncured):** Red liquid.- **Strength:** Medium to High.- **Cure Mechanism:** Anaerobic (cures in the absence of air between close-fitting metal surfaces).- **Viscosity:** Medium, thixotropic (typically 1,200 to 2,400 mPa·s (cP)).- **Fixture Time:** Steel: 10-15 minutes; Brass: 8 minutes; Stainless Steel: 15-180 minutes.- **Full Cure Time:** 24 hours (can be up to 72 hours depending on substrate, bond gap, and temperature).- **Operating Temperature Range:** -55°C to +150°C (-65°F to +300°F) for continuous operation.- **Fluid Resistance:** Highly resistant to various fluids including gasoline, diesel, engine oil, water, glycol, acids, alkalis, and hydraulic fluid once cured.- **Maximum Thread Size:** Up to M25 (1 inch) to M36.

Surface Compatibility

- Suitable for all metal fasteners.- Recommended for use with active metals like steel and brass, and passive metals such as stainless steel.- Not typically recommended for use on plastics, especially thermoplastic materials, due to potential stress cracking.- Tolerant of slight industrial oil contamination.

Known backups / known substitutes

- Permatex Permanent Strength Threadlocker Red (e.g., Permatex High Strength Threadlocker Red).- Loctite 271 (High strength, permanent, but generally lower viscosity).- Loctite 272 (High strength, high temperature resistance).- Loctite 277 (High strength, high viscosity, suited for larger threads).- LK262 (equivalent from China Locke Glue Industry).- Other equivalent products from brands like Loxeal, 3M, and Threebond.

Comparison Note

Loctite 262 offers a versatile medium-to-high strength bond, providing permanent locking and sealing while allowing for disassembly with localized heat and hand tools. This positions it as a more robust solution than typical medium-strength (blue) threadlockers, which are designed for easier removal, and often less aggressive than some ultra-high strength (red) threadlockers that may require more extreme removal methods. Its thixotropic nature is a key advantage, ensuring the adhesive stays in place after application, and its UV fluorescence simplifies quality control processes, making it a preferred choice for critical applications where reliability and inspectability are paramount.