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

Dow DOWSIL TC-4535 CV Silicone Rubber

Dow DOWSIL TC-4535 CV is a high-performance addition-cure liquid silicone rubber from Dow’s DOWSIL™ portfolio—designed for rapid, low-heat vulcanization in precision molding of medical devices, automotive seals, and electronics encapsulation. It offers excellent flow, low compression set, biocompatibility per ISO 10993, and stable rheology for automated dispensing.
  • dow dowsil tc 4535 cv silicone rubber_d06a833d
  • dow dowsil tc 4535 cv silicone rubber_d06a833d

Features Of Dow DOWSIL TC-4535 CV Silicone Rubber

  1. High thermal conductivity (1.7 W/m·K) for efficient heat dissipation in power electronics.

  2. Room-temperature vulcanization (RTV) with condensation cure mechanism—no byproduct interference in sensitive assemblies.

  3. Excellent electrical insulation properties and dielectric stability over wide temperature range (–50 °C to 200 °C).

  4. Low modulus and high conformability enable stress-relief bonding on mismatched CTE substrates.

  5. UL 94 V-0 rated for flame retardancy without halogen additives.

Typical Applications Of Dow DOWSIL TC-4535 CV Silicone Rubber

  1. Thermal interface material (TIM) for IGBT modules and power semiconductor packages.

  2. Encapsulation and potting of LED drivers and AC/DC converters.

  3. Gap-filling adhesive for battery module thermal management in EV powertrains.

  4. Die-attach and underfill in high-reliability automotive electronics.

  5. Thermally conductive gasketing for server power supplies and 5G base station RF units.

Specifications Of Dow DOWSIL TC-4535 CV Silicone Rubber

Chemical TypeCondensation-cure silicone rubber
Product FormTwo-component liquid (Part A: base; Part B: catalyst)
AppearanceOpaque gray paste (Part A), translucent amber liquid (Part B)
Primary ApplicationsThermal interface materials, encapsulation, gap filling
Key FeaturesHigh thermal conductivity, low modulus, RTV cure, UL 94 V-0
Shore A Hardness (7 days, 25 °C)25 ± 3
Density (g/cm³)1.85 ± 0.05
Operating Temperature Range–50 °C to +200 °C (continuous)


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