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

Dow DOWSIL TC-4026 Silicone Rubber

Dow DOWSIL TC-4026 Silicone Rubber is a two-part, addition-cure liquid silicone rubber offering excellent flow, low viscosity, and rapid room-temperature cure. Ideal for precision molding of medical devices and electronics, it delivers high biocompatibility, thermal stability, and consistent mechanical properties post-cure.
  • dow dowsil tc 4026 silicone rubber_c2b17330
  • dow dowsil tc 4026 silicone rubber_c2b17330

Features Of Dow DOWSIL TC-4026 Silicone Rubber

  1. High thermal conductivity (2.6 W/m·K) for efficient heat dissipation in power electronics.

  2. Excellent electrical insulation properties with high dielectric strength and volume resistivity.

  3. Low modulus and high conformability enable stress relief and reliable interface bonding on irregular surfaces.

  4. Thermally stable across -50 °C to +200 °C, maintaining performance under extended thermal cycling.

  5. Non-corrosive, halogen-free formulation compliant with RoHS and REACH requirements.

Typical Applications Of Dow DOWSIL TC-4026 Silicone Rubber

  1. Thermal interface material (TIM) for IGBT modules and power inverters in electric vehicles.

  2. Heat transfer pad between CPUs/GPUs and heatsinks in industrial computing and 5G infrastructure.

  3. Die-attach and gap-filling compound for LED drivers and photovoltaic inverters.

  4. Thermal management layer in battery module cooling plates and energy storage systems.

  5. Interface material for semiconductor packaging requiring long-term reliability under thermal shock.

Specifications Of Dow DOWSIL TC-4026 Silicone Rubber

Chemical TypePlatinum-cured silicone elastomer
Product FormPre-formed solid sheet (available in various thicknesses and custom die-cut shapes)
AppearanceOpaque gray, flexible rubber sheet
Thermal Conductivity2.6 W/m·K (ASTM D5470)
Density2.1 g/cm³ (ASTM D792)
Hardness (Shore A)45 ± 5 (ASTM D2240)
Dielectric Strength≥18 kV/mm (ASTM D149)
Volume Resistivity≥1 × 10¹⁵ Ω·cm (ASTM D257)


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