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

Shin-Etsu KE-961-U Silicone Rubber

Shin-Etsu KE-961-U is a high-performance addition-cure liquid silicone rubber featuring excellent transparency, low viscosity, and outstanding thermal stability. Designed for precision molding and encapsulation, it offers superior mechanical strength, flame retardancy (UL94 V-0), and biocompatibility per ISO 10993. Ideal for medical devices, optical components, and automotive seals.
  • shin etsu ke 961 u silicone rubber_89a54592
  • shin etsu ke 961 u silicone rubber_89a54592

Features Of Shin-Etsu KE-961-U Silicone Rubber

  1. High-temperature resistance up to 200 °C continuous service with excellent thermal stability.

  2. Low compression set for long-term sealing performance in dynamic and static applications.

  3. Excellent electrical insulation properties across wide temperature and frequency ranges.

  4. Good resistance to ozone, UV radiation, and weathering without protective coatings.

  5. Platinum-catalyzed addition-cure system offering precise control over cure kinetics and minimal by-products.

Typical Applications Of Shin-Etsu KE-961-U Silicone Rubber

  1. Automotive under-hood gaskets and seals exposed to high heat and vibration.

  2. Electrical insulators and encapsulants for power electronics and EV battery modules.

  3. Medical device components requiring biocompatibility support (ISO 10993-tested base formulation).

  4. Industrial sensors and transducers requiring stable dielectric behavior in harsh environments.

  5. Aerospace fluid-sealing systems where reliability under thermal cycling is critical.

Specifications Of Shin-Etsu KE-961-U Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure liquid silicone rubber (LSR)
Product FormTwo-part liquid system (Part A: vinyl-terminated polymer; Part B: platinum catalyst + crosslinker)
AppearanceTranslucent, low-viscosity liquid (Part A); clear to pale yellow liquid (Part B)
Shore A Hardness (cured, 7 days @ 25 °C)60 ± 3
Tensile Strength (ASTM D412)8.5 MPa typical
Elongation at Break (ASTM D412)350% typical
Density (ASTM D792)1.12 g/cm³
Cure Schedule (recommended)10 min @ 150 °C or 24 hrs @ 25 °C


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