Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Dow DOWSIL 3-4170 Dielectric Gel Kit

Dow DOWSIL 3-4170 Dielectric Gel Kit is a two-part silicone-based thermal interface material designed for high-voltage insulation and efficient heat dissipation in EV power electronics and renewable energy systems. It offers excellent dielectric strength, low modulus, and long-term stability under thermal cycling.
  • dow dowsil 3 4170 dielectric gel kit_7414d3fb
  • dow dowsil 3 4170 dielectric gel kit_7414d3fb

Features Of Dow DOWSIL 3-4170 Dielectric Gel Kit

  1. Non-corrosive, silicone-based formulation safe for sensitive electronic components and metallizations.

  2. Excellent dielectric insulation with stable performance across wide temperature range (−50 °C to +200 °C).

  3. Thixotropic gel consistency enables precise dispensing and prevents migration or slumping after application.

  4. Low volatility and minimal outgassing — meets NASA low-outgassing requirements (ASTM E595).

  5. Re-workable and non-curing: remains permanently tacky and compliant for long-term stress relief and thermal cycling accommodation.

Typical Applications Of Dow DOWSIL 3-4170 Dielectric Gel Kit

  1. Insulation and protection of high-voltage battery module busbars and interconnects in EV powertrains.

  2. Dielectric filling for LED lighting assemblies exposed to thermal shock and humidity.

  3. Gap-filling encapsulation for power electronics in renewable energy inverters and converters.

  4. Protection of sensors, connectors, and PCB edge interfaces in automotive ADAS systems.

  5. Dielectric barrier layer in aerospace avionics housings requiring EMI/RFI shielding compatibility.

Specifications Of Dow DOWSIL 3-4170 Dielectric Gel Kit

Chemical TypeDimethyl silicone polymer base with fumed silica thickener
Product FormPaste-like, thixotropic gel (kit includes base and catalyst)
AppearanceOff-white to light beige, homogeneous gel
Primary ApplicationsHigh-voltage insulation, thermal interface, conformal gap fill, electrical isolation
Key FeaturesNon-curing, re-workable, low-outgassing, non-corrosive, UL 94 HB rated
Shelf Life (unopened)12 months at 25 °C in original sealed packaging
Operating Temperature Range−50 °C to +200 °C (continuous)
Dielectric Strength (ASTM D149)≥20 kV/mm (at 1 mm thickness, 60 Hz)


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