Permabond® HL138 is a single component liquid that cures only when in contact with metal parts and oxygen is excluded. The liquid adhesive fills the “air space” between parts and upon cure which eliminates wear, erosion, and pitting. Permabond HL138 cures to a tough cross-linked plastic and provides excellent environmental and temperature resistance. Since Permabond® HL138 can fill up the inner space, shaft- hub assemblies can be made with a clearance fit and eliminates an expensive press fit, while actually increasing the push out force.
PERMABOND® HL138 develops full strength quickly on a variety of metals and is used on high speed production lines.
FEATURES AND BENEFITS
- Simple one-part fast cure low viscosity system
- Excellent shear strength
- Good environmental resistance
Physical Properties of Uncured Adhesive
Chemical composition |
Acrylic |
Appearance |
Green |
Viscosity @ 25°C |
150-300 mPa.s (cP) |
Specific Gravity |
1.1 |
UV fluorescence |
No |
Typical Curing Properties
Maximum gap fill Maximum thread size |
0.127 mm 0.005 in M20 ¾” |
Time taken to reach handling strength (M10 steel) @23°C |
10 minutes* |
Time taken to reach working strength (M10 steel) @23°C |
3 hours |
Full strength (M10 steel) @23°C |
24 hours |
Typical Performance of Cured Adhesive
Torque strength (M10 steel ISO10964) |
Break 20 N·m 180 in.lb Prevail 36 N·m 315 in.lb |
Shear strength (steel collar & pin ISO10123) |
16 MPa 2300 psi |
Coefficient of thermal expansion |
90 x 10-6 mm/mm/°C |
Dielectric strength |
11 kV/mm |
Thermal conductivity |
0.19 W/(m.K) |