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

Shin-Etsu X-30-2258-U Silicone Rubber

Shin-Etsu X-30-2258-U is a high-performance liquid silicone rubber (LSR) from Shin-Etsu’s X-30 series, featuring excellent thermal stability, low compression set, and rapid platinum-catalyzed curing. Ideal for precision medical devices and automotive seals, it offers superior flow, biocompatibility per ISO 10993, and consistent reproducibility in high-volume injection molding applications.
  • shin etsu x 30 2258 u silicone rubber_7c0f48e4
  • shin etsu x 30 2258 u silicone rubber_7c0f48e4

Features Of Shin-Etsu X-30-2258-U Silicone Rubber

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

  2. Outstanding electrical insulation properties, maintaining dielectric strength across wide temperature and frequency ranges.

  3. Excellent flexibility and low compression set, ensuring long-term sealing performance under dynamic stress.

  4. Good resistance to ozone, UV radiation, and weathering—ideal for outdoor and harsh-environment applications.

  5. Platinum-catalyzed addition cure system enabling precise, reproducible vulcanization without by-products.

Typical Applications Of Shin-Etsu X-30-2258-U Silicone Rubber

  1. High-reliability electrical insulation components for power electronics and EV battery systems.

  2. Sealing gaskets and encapsulants in industrial sensors and automotive control units.

  3. Thermal interface materials (TIMs) for heat dissipation in LED lighting and semiconductor modules.

  4. Medical device housings and biocompatible-grade enclosures meeting ISO 10993 pre-screening requirements.

Specifications Of Shin-Etsu X-30-2258-U Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure liquid silicone rubber (LSR)
Product FormTwo-part liquid (Part A: base, Part B: catalyst)
AppearancePale translucent viscous liquid (Part A); colorless to pale yellow liquid (Part B)
Shore A Hardness (cured)25 ± 3
Tensile Strength (ASTM D412)6.5 MPa (min)
Elongation at Break (ASTM D412)550 % (min)
Volume Resistivity (ASTM D257)1.0 × 10¹⁵ Ω·cm (typical)
UL RecognitionUL 94 V-0 (flame retardant grade)


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