PERMABOND HL126
Harmonization Code : 3506.10.00.00 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg

Main features
- Water-Thin Wicking Threadlocker
- Warm-Weld/Casting Porosity Sealing
- MIL-S-22473E/MIL-S-46163A/ASTM D5363 Compliance
Product Description
Permabond® HL126 is a water-thin, extremely low-viscosity anaerobic threadlocker designed specifically for wicking into pre-assembled parts via capillary action. By penetrating tight-fitting metallic threads after assembly, it effectively locks fasteners in place to prevent vibration-induced loosening. Furthermore, its penetrating characteristics make it an ideal sealant for weld porosities, as the uncured material easily flows into micro-pores to form a durable, 100% solid environmental seal upon curing.
Key features
- Wicking grade viscosity: The ultra-low viscosity (10-30 cP) allows application post-assembly and enables deep penetration into micro-porosities and tight tolerances.
- Military and ASTM approved: Formulated to meet the stringent lot requirements of MIL-S-22473E (Grade AA), MIL-S-46163A (Type III Grade R), and ASTM D5363.
- Weld sealing capability: Excellent for sealing weld porosity; it wicks into the warm voids and cures rapidly without solvents to establish a new, pressure-resistant seal.
Applications / Suitable for
- Post-assembly locking of set screws, bolts, and fasteners
- Sealing weld porosity and casting micro-pores
- Acting as a tamper-proof agent for assembled joints
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Other Properties
Electrical Properties
Thermal Properties
Additional Information
As-supplied / before-processing properties
Typical properties; these values are not intended for use in preparing specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Chemical Composition | Methacrylate esters | - | - |
| Appearance | Green | - | Liquid |
| Viscosity | 10-30 | mPa.s (cP) | at 25°C |
| Specific Gravity | 1.0 | - | - |
| Maximum Gap Fill | 0.05 | mm | (0.001 in) |
| Maximum Thread Size | M10 | - | (3/8") |
| Flash Point | > 100 | °C | (212°F) |
After-processing / final-state properties
Typical properties; these values are not intended for use in preparing specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Handling Strength Time | 15 | minutes | M10 steel at 23°C |
| Full Strength Time | 24 | hours | M10 steel at 23°C |
| Breakaway Torque Strength | 14 | N-m | M10 steel (ISO 10964) (125 in.lb) |
| Prevailing Torque Strength | 34 | N-m | M10 steel (ISO 10964) (300 in.lb) |
| Shear Strength | 10-20 | MPa | Steel collar & pin (ISO 10123) (1450-2900 psi) |
| Coefficient of Thermal Expansion | 90E-6 | mm/m/°C | - |
| Dielectric Strength | 11 | kV/mm | - |
| Thermal Conductivity | 0.19 | W/(m.K) | - |





















