ARALDITE CW 177
Harmonization Code : 3909509090 | Polyurethanes potting

Main features
- Mineral-Filled Electrical Casting Epoxy
- 22,000 to 27,000 mPa s Casting Viscosity
- Transformer and Capacitor Encapsulation
Product Description
ARALDITE® CW 177 Epoxy Casting Resin is a modified, mineral-filled epoxy casting resin for use in compatible two-component electrical encapsulation systems. The beige, gray, or black liquid resin is formulated for flow during casting or impregnation and is documented for transformer, filter, and capacitor applications. Its filled composition provides thermal conductivity, but final cure conditions and cured properties depend on the selected hardener and system formulation. The resin has a typical viscosity of 22,000 to 27,000 mPa·s at 25°C and a specific gravity of 1.7.
Key features
- Filled epoxy casting resin: The modified mineral-filled resin is used in compatible electrical encapsulation systems.
- Casting and impregnation flow: Typical viscosity is 22,000 to 27,000 mPa·s at 25°C.
- Electrical component applications: Documented applications include transformers, filters, and capacitors.
Applications / Suitable for
- Transformer casting and impregnation
- Electrical filters
- Capacitor encapsulation
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Thermal Properties
Chemical Properties
Additional Information
As-supplied / before-processing properties
Typical as-supplied values unless otherwise stated. These values are not sales specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Product form | Modified mineral-filled epoxy resin | N/A | As supplied |
| Appearance | Beige, gray, or black liquid | N/A | As supplied |
| Viscosity | 22,000 to 27,000 | mPa·s | ISO 2555 at 25°C |
| Specific gravity | 1.7 | N/A | At 25°C |
| Flash point | 135 | °C | As supplied |
| Handling | Homogenize before use | N/A | Filler may settle during storage |





















