SILASTIC 164
Harmonization Code : 3910.00.00.90 | Silicones in Primary Forms; Others
Main features
- 1:1 mix ratio
- UL 94 V-0 flame resistance
- Electrical insulation performance
Product Description
SYLGARD™ 164 Silicone Elastomer is a two-part, 1:1 mix ratio, gray silicone encapsulant designed for potting and protecting electrical and electronic assemblies. The material combines good flowability, moderate thermal conductivity, flame resistance, and rapid room-temperature or heat-accelerated cure to support efficient manufacturing processes. Once cured, it forms a flexible silicone elastomer suitable for protecting components in power supplies, connectors, sensors, industrial controls, transformers, amplifiers, high-voltage resistor packs, and relay assemblies. Its UL 94 V-0 flammability rating, electrical insulation properties, and broad operating temperature capability make it suitable for demanding electronic encapsulation applications.
Key features
- 1:1 mix ratio: Supports straightforward automated mixing, dispensing, and process control.
- UL 94 V-0 flame resistance: Can be considered for applications requiring enhanced flame-retardant performance.
- Electrical insulation performance: Provides dielectric strength of 19 kV/mm and volume resistivity of 1.1 × 10¹³ ohm·cm.
Applications / Suitable for
- Power supplies
- Connectors
- Sensors
- Industrial controls
- Transformers
- Amplifiers
- High-voltage resistor packs and relays
TDS, SDS & Technical Documents
Technical Specifications
Electrical Properties
Thermal Properties
Additional Information
As-supplied / before-processing properties
Typical properties of the uncured two-part silicone system before processing and cure.
| Property | Value | Unit | Method / Condition |
|---|---|---|---|
| Mix Ratio | 1:1 | Parts | Part A : Part B |
| Viscosity (Part A) | 8,925 | cP | Base component |
| Viscosity (Part B) | 9,175 | cP | Catalyst component |
| Working Time | 14 | minutes | 25°C snap time |
| Cure Time | 0.6 | hours | 25°C |
| Shelf Life | 15 | months | Stored at 25°C |
After-processing / final-state properties
Typical cured silicone elastomer properties.
| Property | Value | Unit | Method / Condition |
|---|---|---|---|
| Durometer Hardness | 61 | Shore A | Cured elastomer |
| Dielectric Strength | 19 | kV/mm | Electrical insulation property |
| Volume Resistivity | 1.1E+13 | ohm·cm | Typical value |
| Thermal Conductivity | 0.64 | W/m·K | Typical value |
| Linear CTE | 225 | ppm/°C | By TMA |
| Flammability Rating | UL 94 V-0 | N/A | UL classification |
