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DOWSIL™ TC-4525 CV Thermally Conductive Gap Filler

A soft and compressible material once cured, designed to dissipate the heat from electronics mounted on printed circuit board to heat sink providing a reliable cooling solution for modules like an engine or transmission control unit.

Easier processing and long-term performance stability 

As automotive electronics contribute ever greater value to automotive safety, reliability, performance and comfort, they are also generating higher temperatures that can reduce the functionality and reliability of modules over time.

Dow developed – and continues to broaden – a portfolio of silicone thermal conductive gap fillers with different levels of thermal conductivity that deliver greatly improved dispensability, reduced abrasiveness (certain products) and stable performance for more reliable applications in harsh automotive under the hood environments.

Thermally conductive gap fillers from Dow are soft, compressible, two-part silicone, high thermal conductivity materials specifically formulated to process easily and to effectively dissipate heat from critical automotive parts, such as engine or transmission.


These values are typical properties and are not intended for use in preparing specifications.

  • Color - Part A White
  • Cure Type Platinum-Catalyzed Cure
  • Dielectric Constant at 1MHz 6.2
  • Dielectric Strength (kV/mm) 12 kV/mm
  • Durometer - Shore 00 40 Shore 00
  • Mixing Viscosity in Pas-sec 217
  • Number of Parts Two
  • Specific Gravity @ 25C 2.9
  • Thermal Conductivity > 2.5 Watts per meter K
  • Thixotropic Index 4
  • Viscosity - Part A 223 Pa.s
  • Viscosity - Part B 216 Pa.s
  • Volume Resistivity 2.6e+014 ohm-centimeters
  • Working Time 40 Minutes

Similar Products

  • DOWSIL™ TC-4525 A/B

    A thermally Conductive Gap Filler offers thermal conductivity of 2.5W/m.K. This is a soft and compressible silicone material designed to dissipate heat from electronic modules by conducting it to a heat sink such as an aluminum housing. Excellent fit for automotive electronics and battery packs applications.

No Safety Data Sheets are available online for this material
Please Contact Dow for additional information.

No sales specification could be found for this material in selected language

DOWSIL™ TC-4525 CV Thermally Conductive Gap Filler
No Technical Data Sheets are available for this product
Please Contact Dow for additional information.

DOWSIL™ TC-4525 CV Thermally Conductive Gap Filler

No Regulatory Data Sheets are available for this product

DOWSIL™ TC-4525 CV Thermally Conductive Gap Filler
Please Contact Dow for distribution options available for this product.