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

Dow DOWSIL TC-4605 A&B Kit Silicone Elastomer

Dow DOWSIL TC-4605 A&B Kit is a two-part addition-cure liquid silicone elastomer offering excellent thermal conductivity, low viscosity, and rapid room-temperature cure. Ideal for potting, encapsulation, and thermal interface applications in electronics and EV battery systems. Features high reliability, minimal shrinkage, and UL 94 V-0 flammability rating.
  • dow dowsil tc 4605 a b kit silicone elastomer_a1cfd50b
  • dow dowsil tc 4605 a b kit silicone elastomer_a1cfd50b

Features Of Dow DOWSIL TC-4605 A&B Kit Silicone Elastomer

  1. Two-part, platinum-catalyzed addition-cure silicone elastomer system offering excellent flow and self-leveling behavior.

  2. Low viscosity before cure enables easy dispensing, precise metering, and thorough encapsulation of delicate electronic components.

  3. Fast room-temperature or elevated-temperature cure with minimal shrinkage and outstanding dimensional stability.

  4. Exceptional thermal stability, maintaining mechanical integrity from –55 °C to +200 °C after full cure.

  5. UL 94 V-0 rated (per ASTM D3801), providing inherent flame retardancy without halogenated additives.

Typical Applications Of Dow DOWSIL TC-4605 A&B Kit Silicone Elastomer

  1. Encapsulation and potting of power electronics, including IGBT modules and EV battery management systems.

  2. Thermal interface material (TIM) bonding for heat sinks, LED drivers, and high-power semiconductor assemblies.

  3. Protective conformal coating and stress-relieving underfill for automotive ADAS sensors and engine control units.

  4. Dielectric insulation and environmental sealing in renewable energy inverters and solar microinverters.

  5. High-reliability bonding and gap-filling in aerospace avionics housings requiring long-term thermal cycling resistance.

Specifications Of Dow DOWSIL TC-4605 A&B Kit Silicone Elastomer

Chemical TypePlatinum-catalyzed addition-cure silicone elastomer
Product FormTwo-component liquid kit (Part A and Part B)
Appearance (Uncured)Part A: Translucent, low-viscosity liquid; Part B: Translucent, low-viscosity liquid
Base PolymerDimethylvinylsiloxy-terminated polydimethylsiloxane
Cure MechanismHydrosilylation (Si–H + Si–Vinyl)
Shore A Hardness (7 days @ 25 °C)45 ± 3
Tensile Strength (ASTM D412)5.0 MPa typical
Volume Resistivity (ASTM D257)>1 × 10¹⁵ Ω·cm


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