Huitian 7272 (Original Code HT2721, equivalent to Loctite 272) is flagship high-temperature resistant high-strength anaerobic thread locker, formulated as red high-thixotropy viscous liquid with single-component anaerobic curing system. Its core strengths are ultra-wide temperature resistance, anti-sagging property and permanent locking performance. It fits all heavy-duty bolts up to M36, no softening or loosening under long-term high temperature & vibration conditions. Disassembly requires heating above 150℃ with hand tools. It integrates thread locking, fluid sealing and rust prevention functions, widely adopted for threaded assembly of high-temperature equipment in heavy trucks, construction machinery, petrochemical and metallurgy industries.
Core Technical Parameters
– Appearance: Red high-viscosity thixotropic liquid
– Chemical Composition: Methacrylate anaerobic resin system
– Viscosity: 4000~15000 mPa·s, excellent anti-sagging performance
– Density: 1.11 g/cm³
– Max gap filling: 0.13 mm
– Fixture time: 45~60 mins at 23℃ ambient temperature; fully cured within 24 hours
– Continuous service temperature: -60℃ ~ 230℃
– Applicable thread size: M6 ~ M36 metal bolts
– Disassembly method: Heat up to 150℃ then disassemble with wrenches
– Packages: 50ml bottle, 250ml large industrial bottle
– Curing Mechanism: Anaerobic curing, remains liquid permanently when exposed to air
Key Product Advantages
1. Superior high temperature resistance: Stable long-term service at 230℃, far exceeding 7271; ideal for exhaust, turbo and transmission high-temperature components without softening failure;
2. High viscosity anti-dripping formula: No sagging on vertical/overhead threads, clean operation inside narrow high-temperature engine compartments;
3. Ultra-high permanent locking strength: Resists severe vibration & impact for lifelong fastening, only for non-routine maintenance fasteners;
4. Outstanding chemical & corrosion resistance: Durable against engine oil, diesel, hydraulic fluid, coolant and moisture, permanently prevents thread rust and fluid leakage;
5. Wide substrate compatibility: Works perfectly on cast iron, carbon steel, stainless steel, aluminum alloy and galvanized metals;
6. Exclusive for large-size bolts: Preferred choice for heavy industry high-temperature threaded fasteners below M36.
Main Applications
1. Permanent locking for high-temperature bolts of exhaust manifolds, turbochargers and cylinder heads on heavy trucks and coaches;
2. Heavy-load thread fastening for high-temperature parts of reducers and hydraulic systems on excavators & mining machinery;
3. Thread sealing and rust prevention for high-temperature pipeline flanges in petrochemical, metallurgy and boiler industries;
4. Lifelong anti-loosening assembly for large fasteners on generators and high-pressure oil pumps;
5. Fastener locking for high-temperature sections of wind turbine gearboxes and rail transit vehicles.）
Our experienced engineers and technical specialists are here to provide professional guidance, product selection, and application support tailored to your specific requirements.
