TONSAN 1277 is a red, high-strength, high-viscosity anaerobic threadlocker with 0.25 mm gap fill for large fasteners up to 36 mm. It locks permanently; heat is required for disassembly. FEYANA supplies TONSAN 1277 and can help you select the right grade for your application.
Key features
- Red, high strength, high viscosity
- For large threads up to 36 mm; 0.25 mm gap fill
- Permanent locking; heat needed for disassembly
- Prevents loosening, leakage and corrosion
- Conforms to MIL-S-46163A and JB/T7311-2008
Technical data
| Color | Red |
|---|---|
| Specific gravity (g/cm3) | 1.12 |
| Viscosity (mPa·s) | 7000 |
| Gap fill (mm) | 0.25 |
| Break torque (N·m) | 32.0 |
| Prevail torque (N·m) | 32.0 |
| Fixture time (min) | 30 |
| Fully cured time (h) | 24 |
| Temperature range (℃) | -60~150 |
Applications
- Thread locking in construction machinery
- Thread locking/sealing on rail vehicles
Packaging: 50ml/bottle (Order no. 127701); 250ml/bottle (Order no. 127705)
Data are typical values from the manufacturer’s literature. Contact us for the TDS/SDS and selection advice.
Contact FEYANA: WhatsApp/Zalo +84 988 641 591 – sales.00@feyana.com




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