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

Dow DOWSIL SE 9189 L Silicone Rubber

Dow DOWSIL SE 9189 L Silicone Rubber is a high-strength, addition-cure liquid silicone rubber offering excellent flow, low viscosity, and superior thermal stability. Designed for precision molding of medical devices and automotive seals, it delivers consistent cure performance, biocompatibility per ISO 10993, and outstanding mechanical resilience after vulcanization.
  • dow dowsil se 9189 l silicone rubber_2a151736
  • dow dowsil se 9189 l silicone rubber_2a151736

Features Of Dow DOWSIL SE 9189 L Silicone Rubber

  1. High-transparency, low-viscosity liquid silicone rubber (LSR) with excellent flowability for intricate mold filling.

  2. Fast room-temperature cure via platinum-catalyzed addition reaction, enabling efficient production cycles.

  3. Outstanding thermal stability and long-term aging resistance across -60 °C to +200 °C operating range.

  4. Biocompatibility compliant with ISO 10993-5 and USP Class VI testing for medical-grade applications.

  5. Low compression set and high elasticity retention after repeated mechanical stress.

Typical Applications Of Dow DOWSIL SE 9189 L Silicone Rubber

  1. Medical device components including seals, gaskets, and wearable sensor housings.

  2. Consumer electronics encapsulation for flexible, transparent protective layers on displays and wearables.

  3. Automotive lighting lenses and light-guide elements requiring optical clarity and UV resistance.

  4. Food-contact compliant seals and gaskets in processing equipment and dispensing systems.

  5. Precision molded parts for laboratory diagnostics and microfluidic devices.

Specifications Of Dow DOWSIL SE 9189 L Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure liquid silicone rubber (LSR)
Product FormTwo-part liquid system (Part A + Part B)
AppearanceClear, low-viscosity liquid (Part A); clear, low-viscosity liquid (Part B)
Primary ApplicationsMedical, electronics, automotive lighting, food contact, precision molding
Key FeaturesOptical clarity, rapid RT cure, biocompatibility, low compression set
Shore A Hardness (Cured)30 ± 3
Tensile Strength (Cured)5.5 MPa (ASTM D412)
Elongation at Break (Cured)450% (ASTM D412)


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