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

Dow SILASTIC SH 841 U Silicone Rubber

Dow SILASTIC SH 841 U is a high-strength, two-part addition-cure liquid silicone rubber from Dow’s SILASTIC® portfolio. It offers excellent flow, low viscosity, fast cure at room or elevated temperatures, and outstanding biocompatibility—ideal for medical device molding, encapsulation, and precision soft-gel applications.
  • dow silastic sh 841 u silicone rubber_72a58718
  • dow silastic sh 841 u silicone rubber_72a58718

Features Of Dow SILASTIC SH 841 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 a wide temperature range (–60 °C to +200 °C).

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

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

  5. Meets ISO 10993-5 cytotoxicity requirements and is suitable for medical device components requiring biocompatibility assessment.

Typical Applications Of Dow SILASTIC SH 841 U Silicone Rubber

  1. Medical tubing and fluid-handling components for diagnostic and therapeutic devices.

  2. Seals, gaskets, and diaphragms in pharmaceutical processing equipment.

  3. Encapsulants and protective housings for sensors and electronic assemblies.

  4. Automotive under-hood components requiring high-temperature resistance and vibration damping.

  5. Industrial rollers and precision molded parts for food-contact and cleanroom environments.

Specifications Of Dow SILASTIC SH 841 U Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure silicone elastomer
Product FormTwo-component (Part A + Part B), high-consistency rubber (HCR)
AppearancePearl-white, non-tacky compound (Part A); translucent light-yellow catalyst paste (Part B)
Shore A Hardness (ASTM D2240)40 ± 2
Tensile Strength (ASTM D412)≥ 7.0 MPa
Elongation at Break (ASTM D412)≥ 450 %
Compression Set (ASTM D395, 70 h @ 200 °C)≤ 25 %
Curing SystemRoom-temperature mixing; heat-cured (e.g., 150 °C for 10 min)


Get in Touch with ERICW
Let competitive chemical materials go global.

Your Name *

Your Email *

Your Phone

Country

Your Message *