CONATHANE EN-2523
Harmonization Code : 3506.91.90.99 | 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 ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other

Main features
- Filled Polyurethane Electrical Encapsulant
- 2,800 cP Mixed Viscosity
- 50% Cured Elongation
Product Description
CONATHANE® EN-2523 Polyurethane Encapsulant is a black, two-component, filled polyurethane casting and encapsulation system for electrical and electronic assemblies exposed to extreme environments and thermal shock. The mixed material has a typical viscosity of 2,800 cP at 25°C and a 50-minute working time, supporting potting processes that require flow around components before cure. The system may cure at room temperature or with heat and is documented for resistance to salt water, aliphatic hydrocarbons, mild acids, and mild bases. Typical cured properties include Shore D 50 hardness, 50% elongation, and electrical insulation.
Key features
- Filled polyurethane system: The black two-component material is formulated for potting electrical and electronic devices.
- Controlled processing window: Typical mixed viscosity is 2,800 cP with a 50-minute working time at 25°C.
- Environmental resistance: The cured system is documented for thermal shock and exposure to salt water, aliphatic hydrocarbons, mild acids, and mild bases.
Applications / Suitable for
- Electrical and electronic devices exposed to thermal shock
- Potting assemblies used in adverse environments
- Room-temperature or heat-cured polyurethane encapsulation
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Electrical Properties
Additional Information
As-supplied / before-processing properties
Typical as-supplied or mixed-state values unless otherwise stated. These values are not sales specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Color | Black | N/A | As supplied |
| Components | Two-part | N/A | System configuration |
| Mixed viscosity | 2,800 | cP | At 25°C |
| Mixed specific gravity | 1.44 | N/A | At 25°C |
| Working time | 50 | min | At 25°C |
| Cure options | 7 days at 25°C; 16 h at 80°C | N/A | Documented schedules |
| Flash point, Part A | 199 | °C | As supplied |
| Flash point, Part B | >100 | °C | As supplied |
After-processing / final-state properties
Typical final-state values under the stated system and test conditions. These values are not sales specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Hardness | 50 | Shore D | Typical cured value |
| Tensile strength | 1,600 | psi | Typical cured value |
| Elongation | 50 | % | Typical cured value |
| Dielectric strength | >400 | V/mil | Typical cured value |
| Volume resistivity | 3.4 × 10¹³ | ohm·cm | At 25°C |





















