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

Dow DOWSIL SE 4447 CV Kit

Dow DOWSIL SE 4447 CV Kit is a two-component silicone elastomer system from Dow’s DOWSIL SE series, designed for high-precision casting and molding of optical-grade parts. It offers excellent clarity, low viscosity, rapid room-temperature cure, and superior thermal stability—ideal for LED encapsulation, lenses, and precision optics applications.
  • dow dowsil se 4447 cv kit_5c86e390
  • dow dowsil se 4447 cv kit_5c86e390

Features Of Dow DOWSIL SE 4447 CV Kit

  1. Two-component, addition-cure silicone system offering rapid room-temperature cure with low exotherm.

  2. Excellent adhesion to common substrates including metals, plastics, and glass without primer.

  3. UL 94 V-0 rated for flame resistance, supporting safety-critical electronic encapsulation requirements.

  4. Low viscosity before mixing enables precise dispensing and uniform flow into complex geometries.

  5. Stable pot life of ≥4 hours at 25°C after component A/B mixing, facilitating flexible production scheduling.

Typical Applications Of Dow DOWSIL SE 4447 CV Kit

  1. Encapsulation and protection of power electronics modules in electric vehicles (EV) inverters and DC-DC converters.

  2. Thermal interface material (TIM) bonding and gap-filling for high-power LED drivers and lighting systems.

  3. Sealing and potting of sensors and control units in industrial automation and renewable energy inverters.

  4. Dielectric insulation for battery management system (BMS) components operating under high-voltage conditions.

Specifications Of Dow DOWSIL SE 4447 CV Kit

Chemical TypePlatinum-catalyzed addition-cure silicone elastomer
Product FormTwo-component kit (Part A: base; Part B: catalyst)
AppearancePart A: translucent colorless liquid; Part B: translucent pale yellow liquid
Primary ApplicationsElectronic encapsulation, thermal management, and high-voltage insulation
Key FeaturesUL 94 V-0 rating, low ionic content, high dielectric strength, thermal stability to 200°C
BenefitsReduced assembly time via RT cure, long-term reliability under thermal cycling, no corrosive by-products
Mix Ratio (A:B)10:1 by weight
Cure Time (25°C)≥90% hardness development within 24 hours


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