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

Wacker SEMICOSIL 987 GR Silicone Gel

Wacker SEMICOSIL 987 GR is a platinum-cured, low-viscosity silicone gel designed for potting and encapsulation of sensitive electronics. It offers excellent thermal stability, low stress on components, and outstanding electrical insulation. The translucent, flexible gel cures at room temperature or accelerated with heat, ensuring reliable protection against moisture, vibration, and thermal cycling in demanding industrial and automotive applications.
  • wacker semicosil 987 gr silicone gel_42a396fc
  • wacker semicosil 987 gr silicone gel_42a396fc

Features Of Wacker SEMICOSIL 987 GR Silicone Gel

  1. Ultra-low modulus silicone gel offering exceptional stress relief for sensitive electronic components.

  2. Self-adhesive without requiring primers—bonds reliably to plastics, metals, and coated PCBs.

  3. Excellent thermal stability with continuous service temperature range from −50 °C to +200 °C.

  4. UL 94 V-0 rated for flame resistance, supporting compliance in safety-critical applications.

  5. Non-corrosive and halogen-free formulation, suitable for RoHS- and REACH-compliant manufacturing.

Typical Applications Of Wacker SEMICOSIL 987 GR Silicone Gel

  1. Underfill and encapsulation of power semiconductor modules (e.g., IGBTs, SiC MOSFETs).

  2. Thermal interface material (TIM) for LED drivers and automotive lighting assemblies.

  3. Protection of MEMS sensors and high-precision analog circuitry against mechanical shock and vibration.

  4. Conformal coating alternative for high-voltage battery management systems (BMS) in EVs.

Specifications Of Wacker SEMICOSIL 987 GR Silicone Gel

Chemical TypePlatinum-cured addition-cure silicone gel
Product FormPaste (thixotropic, two-component)
AppearanceTranslucent gray gel
Primary ApplicationsElectronics encapsulation, thermal management, mechanical stress relief
Key FeaturesLow modulus, self-adhesive, flame-retardant, non-corrosive
Shore A Hardness (7 days, 23 °C)10–15
Density (23 °C)1.25 g/cm³
UL RecognitionUL 94 V-0, UL 746C (RTI: 130 °C electrical, 150 °C mechanical)


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