HM129
Permabond HM129 is a high-strength, medium-viscosity anaerobic threadlocker and sealant. It cures in the absence of air between close-fitting metal parts and works reliably on steel, cadmium, zinc and other plated fasteners. Once cured, it locks and seals nuts, bolts and screws intended for permanent assembly, preventing loosening and leakage.
HM129 is suited to critical threaded joints throughout a UAV that are not intended for routine disassembly. Its vibration resistance makes it ideal for fasteners exposed to dynamic flight loads, and its oil tolerance and corrosion protection address demanding assembly conditions when the recommended surface preparation is followed.
Specifications:
| Color | Red |
| Viscosity | 500 mPa.s (cP) |
| Gap | 0.15 mm (0.006 in) |
| Handling Time | 10 min |
| Shear Strength (Steel) | 17 N/mm² (2,500 psi) |
| Temperature Range | -55 to 150°C (-65 to 300°F) |
| Packaging | 10 x 50 mL; 5 x 200 mL bottles |
