Permabond HM160 Retaining Compound

Description

Permabond® HM160 is a high-strength anaerobic retaining compound designed for securing bearings, shafts, bushings, and cylindrical assemblies. It cures when confined between metal parts in the absence of oxygen, forming a tough, impact-resistant polymer that prevents loosening due to vibration, thermal expansion, or heavy loads.

This military-grade adhesive meets MIL-SPEC MIL-R-46082B Type II and ASTM D5363 (Group 04, Class 1, Grade 2), ensuring compliance for military, aerospace, and industrial applications.

For customers seeking alternatives to Loctite® 680, 3M™ Scotch-Weld™ RT38, or Permatex® High-Strength Retaining Compound, Permabond HM160 delivers a powerful, high-performance solution.

Key Features & Benefits

✅ High-Strength, Permanent Retention – Prevents loosening and fretting in cylindrical assemblies
✅ MIL-SPEC Compliant – Meets MIL-R-46082B Type II and ASTM D5363 (Group 04, Class 1, Grade 2)
✅ Fills Small Gaps & Enhances Fit Strength – Reduces the need for tight press fits
✅ Fast Curing at Room Temperature – Handling strength in 15 minutes, full cure in 24 hours
✅ Prevents Corrosion & Moisture Ingress – Seals joints against environmental damage
✅ Increases Bearing & Shaft Life – Reduces stress, wear, and misalignment in rotating assemblies
✅ 100% Solids, Solvent-Free – Environmentally friendly and safe for industrial use

Technical Specifications

• Viscosity: 600 mPa.s (medium viscosity)
• Gap Fill: 0.2 mm (0.008 in)
• Maximum Thread Size: M30 (1¼”)
• Handling Strength: ~15 minutes at 23°C (73°F)
• Full Cure Time: 24 hours
• Torque Strength (M10 Steel, ISO 10964):
  • Break: 30 N·m (270 in.lb)
  • Prevail: 50 N·m (450 in.lb)
• Shear Strength (Steel Collar & Pin, ISO 10123): 14 MPa (2000 psi)
• Temperature Range: -55°C to 150°C (-65°F to 300°F)
• Color: Green

Applications

• Securing cylindrical components in slip, press, or shrink fit assemblies
• Retaining bearings, bushings, shafts, and gears in rotating machinery
• Reducing the need for heavy press fits by filling gaps and reinforcing joints
• Preventing fretting, wear, and movement in precision components
• Military, aerospace, automotive, and heavy equipment applications

Directions for Use

1. Ensure surfaces are clean, dry, and grease-free. Use acetone or isopropanol for best results.
2. For slip fit assemblies, apply HM160 to the leading edge of the pin and inside the collar.
3. For press fit assemblies, apply HM160 to both components before pressing them together.
4. For shrink fit assemblies, heat the collar, apply HM160 to the pin, and assemble while components are expanded.
5. Allow 15 minutes for handling strength and 24 hours for full cure.
6. For faster curing, use Permabond A905 or ASC10 Activator.

🔹 Note: HM160 is a high-strength, permanent retaining compound—removal may require localized heating and mechanical force. Not recommended for plastic components or oxygen-rich systems.