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

Dow SILASTIC SH 842 U Silicone Rubber

Dow SILASTIC SH 842 U is a high-strength, platinum-cured liquid silicone rubber (LSR) from Dow’s SILASTIC™ medical-grade portfolio. It offers excellent biocompatibility, low extractables, and robust thermal/mechanical stability—ideal for demanding healthcare and pharmaceutical applications requiring ISO 10993 and USP Class VI compliance.
  • dow silastic sh 842 u silicone rubber_bc674445
  • dow silastic sh 842 u silicone rubber_bc674445

Features Of Dow SILASTIC SH 842 U Silicone Rubber

  1. High-consistency, two-part addition-cure silicone rubber with excellent flow control for precision molding.

  2. Low compression set and outstanding thermal stability across -60 °C to +200 °C operating range.

  3. Excellent electrical insulation properties and UL 94 V-0 flammability rating (as molded).

  4. Good adhesion to various substrates including metals and engineering plastics without primer.

  5. Reproducible rheology and low viscosity in Part A, enabling consistent metering and mixing in automated systems.

Typical Applications Of Dow SILASTIC SH 842 U Silicone Rubber

  1. Sealing and gasketing for automotive powertrain and EV battery modules.

  2. Encapsulation of sensitive electronic components and sensors in industrial control units.

  3. Medical device housings requiring biocompatibility per ISO 10993-5 and USP Class VI compliance.

  4. Flexible connectors and vibration-damping mounts in aerospace avionics assemblies.

  5. Custom molded parts for household appliances demanding long-term aging resistance and dimensional stability.

Specifications Of Dow SILASTIC SH 842 U Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure silicone elastomer
Product FormTwo-component liquid system (Part A + Part B)
AppearancePart A: Translucent, low-viscosity liquid; Part B: Opaque, viscous liquid
Primary ApplicationsHigh-reliability sealing, encapsulation, and structural bonding
Key FeaturesLow shrinkage, excellent tear strength, and minimal outgassing
BenefitsReduced post-cure requirements, high yield in high-volume molding, and compatibility with automated dispensing
Cure SystemAddition cure (no by-products); typical cure at 150 °C for 5 minutes
Storage Stability12 months at ≤25 °C in unopened containers


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