LOCTITE® STYCAST U 2500 HTR
Features and Benefits
This black, low viscosity, 2-part flexible polyurethane encapsulant has excellent wetting properties and can be used to replace silicones.
LOCTITE® STYCAST U 2500 HTR flexible polyurethane encapsulant is specially formulated to have low viscosity and excellent wetting properties for complete impregnation of both small slightly wound coils and large castings. It can also be used to replace silicones. LOCTITE STYCAST U 2500 HTR has a higher service temperature than standard polyurethane materials and is ideal for transformers, PCBs and other insulating applications.
- Low viscosity
- Low modulus
- High temperature resistance
- Excellent wetting properties
Documents and Downloads
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Technical Information
| Applications | Encapsulating |
| Coefficient of thermal expansion (CTE), Above Tg | 134.0 ppm/°C |
| Cure type | Room temperature (ambient) cure |
| Glass transition temperature (Tg) | -50.0 °C |
| Mix ratio, by weight | 100 : 7.6 |
| Number of components | 2 part |
| Shelf life | 183.0 day |
| Shore hardness, Shore A | 75.0 |
| Thermal conductivity | 0.5 W/mK |
| Mixed | |
| Viscosity, Mixed @ 25.0 °C | 8000.0 mPa·s (cP) |
| Resin | |
| Color, Resin | Black |
| Viscosity, Resin @ 25.0 °C | 12500.0 mPa·s (cP) |
| Hardener | |
| Color, Hardener | Amber |
| Viscosity, Hardener @ 25.0 °C | 5.0 mPa·s (cP) |
LOCTITE® STYCAST U 2500 HTR
This black, low viscosity, 2-part flexible polyurethane encapsulant has excellent wetting properties and can be used to replace silicones.