Huitian 7243 (Original Model HT2431) is upgraded universal medium-strength anaerobic thread locker. It is specially developed for metal bolts with tiny residual oil. Its core advantage is excellent oil tolerance, which enables normal curing even if thread surface retains lubricating oil without thorough degreasing. It cures inside thread gaps under oxygen-free condition, providing triple functions: anti-loosening, sealing and rust prevention. It can be disassembled with standard hand tools, widely used in auto repair, wind power and machinery assembly industries.
Core Technical Parameters
– Appearance: Homogeneous red thixotropic liquid
– Chemical Composition: Methacrylate anaerobic resin system
– Viscosity: 1300~3000 mPa·s, no sagging during vertical application
– Density: 1.08g/cm³
– Max gap filling: 0.13mm
– Fixture time: ≤20 mins at 23℃ ambient temperature; fully cured within 24 hours
– Breakaway torque: 20 N·m; Removable torque: 13 N·m
– Continuous service temperature: -50℃ ~ 150℃
– Applicable thread size: M6 ~ M20 bolts
– Standard Packages: 50ml bottle, 250ml large industrial bottle
– Curing Mechanism: Anaerobic curing; remains liquid permanently when exposed to air
Key Product Advantages
1. Outstanding oil tolerance (core feature): Cures steadily on threads with residual engine oil/lubricant, no strict surface cleaning required, greatly simplifying pre-assembly procedures;
2. Medium strength for repeated disassembly: Balanced locking force, easy to detach with ordinary wrenches without heating, ideal for fasteners needing regular maintenance;
3. Anti-sagging thixotropic formula: No dripping on vertical and overhead threads, clean construction;
4. Triple protection for threads: Prevent loosening caused by vibration, block oil/water penetration, avoid thread seizure from rust;
5. Wide substrate compatibility: Works perfectly on carbon steel, stainless steel, aluminum alloy, galvanized and gold-plated inert metals;
6. Superior medium resistance: Stable under long-term immersion of engine oil, diesel, coolant and moisture, durable under vibrating engine and chassis conditions.
Main Applications
1. Anti-loosening locking for oil-contaminated bolts on auto & motorcycle engines, chassis suspensions, wheel hubs and gearboxes;
2. Screw locking & sealing for wind turbine gearboxes, nacelle brackets and fairings;
3. Fastener anti-loosening for air compressors, reducers, machine tools and hydraulic equipment;
4. Pipe thread sealing to prevent fluid leakage and thread rust seizure;
5. Assembly and maintenance locking for construction machinery, buses and trucks.）
Our experienced engineers and technical specialists are here to provide professional guidance, product selection, and application support tailored to your specific requirements.
