INSULCAST RTVS 8127
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
- Flame-Retardant 1:1 Silicone Encapsulation
- 4,000 cP Mixed Viscosity
- 0.75 W/(m K) Thermal Encapsulation
Product Description
INSULCAST® RTVS 8127 Silicone Encapsulant is a gray, two-component, flame-retardant, reversion-resistant silicone compound for potting dense electronic packages that require heat dissipation. The 1:1 system has a typical mixed viscosity of 4,000 cP and a 160 to 220-minute pot life at 25°C, supporting controlled flow before a 24-hour room-temperature cure. After cure, the silicone has Shore A 55 hardness, 0.75 W/m·K thermal conductivity, 500 V/mil dielectric strength, and service from -55°C to 204°C. The product is documented as UL 94 V-0.
Key features
- Thermally conductive silicone: Typical cured thermal conductivity is 0.75 W/m·K.
- Long process window: Typical pot life is 160 to 220 minutes at 25°C.
- Flame-retardant electrical protection: The product is documented as UL 94 V-0 with 500 V/mil dielectric strength.
Applications / Suitable for
- Dense electronic package potting
- Electronic assemblies requiring heat dissipation
- Flame-retardant 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 | Gray | N/A | Mixed system |
| Mix ratio | 1:1 | ratio | Part A : Part B |
| Mixed viscosity | 4,000 | cP | Typical |
| Pot life | 160 to 220 | 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 | 55 | Shore A | Typical cured value |
| Thermal conductivity | 0.75 | W/m·K | Typical cured value |
| Dielectric constant | 4.0 | N/A | At 1 kHz |
| Dielectric strength | 500 | V/mil | Typical cured value |
| Volume resistivity | 1 × 10¹⁵ | ohm·cm | Typical cured value |
| Coefficient of thermal expansion | 18 × 10⁻⁵ | 1/°C | Typical cured value |
| Service temperature | -55 to 204 | °C | Documented range |
| Flammability classification | V-0 | UL 94 | Documented classification |
