Huitian 7242 (Original Code HT2421) is universal medium-strength anaerobic thread locker, equivalent to Loctite 242. It is single-component thixotropic blue liquid, which cures only inside metal thread gaps without oxygen. Designed for screw anti-loosening, thread sealing and rust prevention. It can be disassembled with standard hand tools after curing, widely applied in machinery and auto maintenance industries.
Core Technical Parameters
– Appearance: Homogeneous blue liquid
– Base Material: Methacrylate anaerobic resin system
– Viscosity: 850~1600 mPa·s, thixotropic property prevents dripping
– Maximum gap filling: 0.13mm
– Tack-free time: ≤20 mins at 23℃; fully cured within 24 hours
– Breakaway torque: 25 N·m; Removable torque: 29 N·m
– Continuous service temperature: -50℃ ~ 150℃
– Standard Package: 50ml bottle, 250ml large industrial bottle available
– Applicable thread size: M6 ~ M20 bolts
– Curing mechanism: Anaerobic curing, remains liquid permanently when exposed to air
Key Product Advantages
1. Medium strength & easy disassembly: Balanced locking force, convenient to take apart with wrenches without heating, ideal for fasteners requiring repeated disassembly;
2. Anti-sagging thixotropy: No downward flowing on vertical threads, clean operation without contaminating workpieces;
3. Triple protection for threads: Anti-loosening against vibration, sealing against oil/water penetration, rust prevention by isolating air;
4. Excellent chemical resistance: Stable under long-term immersion of engine oil, gasoline, coolant, moisture and weak acid/alkali, perfect for engine and chassis working conditions;
5. Ready-to-use single-component formula: No mixing or proportioning needed, stable shelf life under room temperature storage;
6. Tolerant to slight oil residue on threads, strict degreasing is not mandatory for workpieces.
Main Applications
1. Anti-loosening locking for chassis, wheel hub, suspension, water pump bolts on automobiles and motorcycles;
2. Fastener locking for air compressors, reducers, machine tools to avoid loosening caused by equipment vibration;
3. Thread sealing & fastening for home appliances, precision instruments and hardware equipment;
4. Pipe fitting thread sealing to stop water leakage and thread seizing by rust;
5. Assembly and maintenance locking for light fasteners of construction machinery.）
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