Products

SYLGARD™ 164 Silicone Elastomer

  • Technology: Silicone Elastomer
  • Brand Name: SYLGARD™ 164 Silicone Elastomer
  • Manufacturer: Dow
  • Package size: Contact Avantek for details.
  • Shelf life: 15 months

 

 

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1. Product Overview

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.

2. Applications

SYLGARD™ 164 Silicone Elastomer is used for:

  • Potting and encapsulation of power supplies
  • Connectors, sensors, and industrial controls
  • Transformers and amplifiers
  • High-voltage resistor packs
  • Relays and PCB system assemblies

3. Typical Properties

Unmixed Components
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)
Mixed & Cured Properties
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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