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

Dow SILASTIC SH 861 U Silicone Rubber

Dow SILASTIC SH 861 U is a high-strength, platinum-cured liquid silicone rubber (LSR) from Dow’s SILASTIC medical-grade series—designed for precision injection molding, excellent biocompatibility, thermal stability, and low extractables. Ideal for demanding healthcare and wearable device applications requiring ISO 10993 compliance and consistent rheological performance.
  • dow silastic sh 861 u silicone rubber_6e30c34e
  • dow silastic sh 861 u silicone rubber_6e30c34e

Features Of Dow SILASTIC SH 861 U Silicone Rubber

  1. High-consistency, two-part addition-cure silicone rubber with excellent processability in compression and transfer molding.

  2. Outstanding thermal stability and long-term performance across –60 °C to +200 °C operating range.

  3. Low compression set and superior resilience for dynamic sealing and gasketing applications.

  4. Meets ISO 10993-5 and USP Class VI biocompatibility requirements for medical device components.

  5. Excellent electrical insulation properties and resistance to ozone, UV, and weathering.

Typical Applications Of Dow SILASTIC SH 861 U Silicone Rubber

  1. Medical tubing connectors and implantable device housings requiring biocompatibility.

  2. Automotive under-hood seals, grommets, and vibration-damping mounts.

  3. Industrial fluid-handling components exposed to steam, hot air, or aggressive environments.

  4. Consumer appliance seals for cooktops, ovens, and high-temperature food contact surfaces.

  5. Electrical encapsulation and potting of sensitive power electronics and sensors.

Specifications Of Dow SILASTIC SH 861 U Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure silicone rubber
Product FormTwo-part liquid (Part A: base; Part B: catalyst), supplied separately
AppearanceOpaque, off-white to light beige viscous paste
Primary ApplicationsMedical devices, automotive sealing, industrial gaskets, high-temp consumer appliances
Key FeaturesBiocompatible, low compression set, thermally stable, electrically insulating
Shore A Hardness (Cured, 7 days @ 23 °C)60 ± 3
Tensile Strength (ASTM D412)≥ 8.0 MPa
Elongation at Break (ASTM D412)≥ 350 %


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