INSULCAST RTVS 8128
Harmonization Code : 3208.20.90 | Paints and varnishes that are dispersed or dissolved in a non aqueous medium
Main features
- Low-Viscosity Encapsulation Application
- 2,200 cP Mixed Viscosity
- 55 to 204 deg C Service Range
Product Description
"
INSULCAST® RTVS 8128 Silicone Encapsulant is a dark-gray, two-component, low-viscosity, flame-retardant, reversion-resistant RTV silicone for general-purpose and high-voltage potting applications. The 1:1 system has a typical mixed viscosity of 2,200 cP and a 60 to 90-minute pot life at 25°C, followed by a 24-hour room-temperature cure. After cure, the silicone has Shore A 50 hardness, 0.31 W/m·K thermal conductivity, 550 V/mil dielectric strength, and service from -55°C to 204°C. Published portfolio data state that the product meets UL 94 V-0.
Key features
- High-voltage potting: Typical cured dielectric strength is 550 V/mil.
- Low-viscosity 1:1 system: Typical mixed viscosity is 2,200 cP.
- Flame-retardant RTV protection: Published portfolio data state that the product meets UL 94 V-0.
Applications / Suitable for
- High-voltage electronic potting
- General-purpose electrical casting
- Repairable silicone encapsulation
"
TDS, SDS & Technical Documents
Technical Specifications
No specifications available.
Additional Information
As-supplied / before-processing properties
Typical as-supplied or processing-state values unless otherwise stated. These values are not sales specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Color | Dark gray | N/A | Mixed system |
| Mix ratio | 1:1 | ratio | Part A : Part B |
| Mixed viscosity | 2,200 | cP | Typical |
| Pot life | 60 to 90 | min | At 25°C |
| Cure time | 24 | h | At 25°C |
After-processing / final-state properties
Typical cured or final-state values under the stated system and test conditions. These values are not sales specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Hardness | 50 | Shore A | Typical cured value |
| Thermal conductivity | 0.31 | W/m·K | Typical cured value |
| Dielectric constant | 3.0 | N/A | At 1 kHz |
| Dielectric strength | 550 | V/mil | Typical cured value |
| Volume resistivity | 1.5 × 10¹⁵ | ohm·cm | Typical cured value |
| Coefficient of thermal expansion | 22 × 10⁻⁵ | 1/°C | Typical cured value |
| Service temperature | -55 to 204 | °C | Documented range |
| Flammability classification | Meets V-0 | UL 94 | Published portfolio statement |
