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

Dow DOWSIL EG-4100 Kit

Dow DOWSIL EG-4100 Kit is a two-component silicone elastomer system from Dow’s DOWSIL™ portfolio, delivering exceptional flexibility, thermal stability, and electrical insulation for demanding encapsulation and potting applications in electronics and automotive sectors.
  • dow dowsil eg 4100 kit_676ec15d
  • dow dowsil eg 4100 kit_676ec15d

Features Of Dow DOWSIL EG-4100 Kit

  1. Two-component, addition-cure silicone elastomer system offering excellent flowability and low viscosity for precise dispensing.

  2. Fast room-temperature cure with optional heat acceleration, enabling high-throughput manufacturing cycles.

  3. Exceptional thermal stability and long-term reliability across -55 °C to +200 °C operating range.

  4. Low compression set and high elongation at break, ensuring durable sealing and cushioning performance.

  5. UL 94 V-0 rated formulation for enhanced flame resistance in demanding electronic applications.

Typical Applications Of Dow DOWSIL EG-4100 Kit

  1. Encapsulation and potting of power electronics, including IGBT modules and EV battery control units.

  2. Thermal interface material (TIM) bonding for heat sinks and power semiconductors.

  3. Vibration-damping gaskets and seals in automotive under-hood sensors and lighting assemblies.

  4. Conformal coating and protective overmolding for PCBs exposed to harsh environmental conditions.

  5. Soft-touch tactile buttons and membrane switch overlays in industrial HMI devices.

Specifications Of Dow DOWSIL EG-4100 Kit

Chemical TypePlatinum-catalyzed addition-cure silicone elastomer
Product FormTwo-component kit (Part A: base; Part B: catalyst)
Appearance (Uncured)Part A: translucent viscous liquid; Part B: translucent liquid
Mix Ratio (by weight)10:1 (A:B)
Cure Schedule (Standard)24 h at 23 °C or 30 min at 100 °C
Hardness (Shore A, cured)40 ± 5
Tensile Strength (cured)5.0–6.5 MPa
Elongation at Break (cured)≥ 250%


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