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

Shin-Etsu KE-5490-U Silicone Rubber

Shin-Etsu KE-5490-U is a high-performance addition-cure liquid silicone rubber from Shin-Etsu’s KE-series, offering excellent thermal stability, low compression set, and superior electrical insulation. It cures rapidly at room or elevated temperatures with precise dimensional control, ideal for precision molding of seals, gaskets, and medical components. Meets ISO 10993 and USP Class VI biocompatibility standards.
  • shin etsu ke 5490 u silicone rubber_7a86a20d
  • shin etsu ke 5490 u silicone rubber_7a86a20d

Features Of Shin-Etsu KE-5490-U Silicone Rubber

  1. High-temperature resistance up to 200 °C continuous service

  2. Excellent electrical insulation properties with low dielectric loss

  3. Outstanding flexibility and compression set resistance at low temperatures

  4. Good adhesion to various substrates including metals and plastics

  5. Platinum-catalyzed, addition-cure system with precise control over cure kinetics

Typical Applications Of Shin-Etsu KE-5490-U Silicone Rubber

  1. High-reliability sealing gaskets for automotive powertrain components

  2. Insulating bushings and potting compounds in power electronics modules

  3. Thermal interface materials (TIMs) for EV battery pack thermal management

  4. Dynamic seals in industrial fluid handling systems requiring chemical resistance

  5. Medical device housings requiring biocompatibility-compliant silicone elastomers

Specifications Of Shin-Etsu KE-5490-U Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure liquid silicone rubber (LSR)
Product FormTwo-component (Part A + Part B), pourable liquid
AppearanceTranslucent, low-viscosity liquid (Part A); translucent catalyst paste (Part B)
Shore A Hardness (Cured)50 ± 3
Tensile Strength (Cured)8.5 MPa (ASTM D412)
Elongation at Break (Cured)450% (ASTM D412)
Volume Resistivity (25 °C)1.0 × 10¹⁵ Ω·cm (ASTM D257)
UL RecognitionUL 94 V-0 (flame retardant formulation)


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