SYLGARD™ 164 is a two-part, 1:1 mix ratio silicone elastomer designed for general-purpose encapsulation. It offers good flowability, moderate thermal conductivity, and flame resistance (UL 94 V-0). The product cures rapidly at room temperature and can be heat-accelerated for faster processing. It is well-suited for electrical and electronic applications requiring protection, durability, and repairability.
SYLGARD™ 164 Silicone Elastomer is used for:
| Property | Unit | Part A (Base) | Part B (Catalyst) |
|---|---|---|---|
| Viscosity | cP (mPa·s) | 8,925 | 9,175 |
| Specific Gravity | – | 1.58 | 1.57 |
| Mix Ratio | – | 1:1 | 1:1 |
| Shelf Life | Months | 15 (at 25°C) | 15 (at 25°C) |
| Property | Unit | Result |
|---|---|---|
| Cure Time (at 25°C) | Hours | 0.6 |
| Working Time (Snap Time) | Minutes | 14 |
| Durometer Hardness | Shore A | 61 |
| Tear Strength | ppi (N/cm) | 2 (0.2) |
| Dielectric Strength | Volts/mil (kV/mm) | 475 (19) |
| Dielectric Constant (100 Hz) | – | 3.33 |
| Dielectric Constant (100 kHz) | – | 3.28 |
| Volume Resistivity | Ohm·cm | 1.1 × 10¹³ |
| Dissipation Factor (100 Hz) | – | 0.0078 |
| Dissipation Factor (100 kHz) | – | 0.0009 |
| Thermal Conductivity | W/m·K | 0.64 |
| Coefficient of Thermal Expansion (CTE) | ppm/°C | 225 |
| UL Flammability Rating | – | 94 V-0 |
| UL RTI Rating | °C | 150 |
| Useful Temperature Range | °C | -45 to 200 |
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