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

Dow DOWSIL 993N-HE Silicone Rubber

Dow DOWSIL 993N-HE is a high-elongation, heat-curable liquid silicone rubber offering excellent tear strength, low compression set, and outstanding adhesion to plastics/metals. Designed for demanding automotive and industrial applications, it cures rapidly at elevated temperatures with consistent mechanical performance and superior thermal stability.
  • dow dowsil 993n he silicone rubber_c97adafe
  • dow dowsil 993n he silicone rubber_c97adafe

Features Of Dow DOWSIL 993N-HE Silicone Rubber

  1. High-elongation, low-modulus silicone rubber offering exceptional flexibility and conformability.

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

  3. UL 94 V-0 rated for flame resistance in electrical and electronic applications.

  4. Good resistance to thermal cycling, moisture, and ozone over extended service life.

  5. One-part, heat-curable formulation enabling simplified processing and reliable room-temperature storage stability.

Typical Applications Of Dow DOWSIL 993N-HE Silicone Rubber

  1. Sealing and potting of LED lighting modules and drivers.

  2. Encapsulation of power electronics and automotive control units.

  3. Vibration-damping gaskets in industrial sensors and instrumentation.

  4. Thermal interface material (TIM) bonding layers in heat sink assemblies.

  5. Protective coatings for flexible printed circuits (FPCs) in consumer electronics.

Specifications Of Dow DOWSIL 993N-HE Silicone Rubber

Chemical TypePlatinum-cured addition-cure silicone rubber
Product FormThixotropic paste, one-component
AppearanceOff-white to light gray, homogeneous paste
Primary ApplicationsEncapsulation, potting, sealing, and bonding
Key FeaturesFlame retardant (UL 94 V-0), high elongation (>250%), low compression set
BenefitsReduced assembly steps, long shelf life (12 months at 25°C), RoHS compliant
Cure MechanismHeat-cured (e.g., 150°C for 30 min)
Storage ConditionsStore at 2–8°C; protect from freezing and moisture


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