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

Dow SILASTIC 3730 Silicone Rubber

Dow SILASTIC 3730 is a high-consistency, platinum-cured silicone rubber offering excellent mechanical strength, thermal stability up to 200°C, and biocompatibility per ISO 10993. Ideal for medical tubing, seals, and precision molded parts, it features low compression set, superior tear resistance, and consistent batch-to-batch performance across the SILASTIC® elastomer series.
  • dow silastic 3730 silicone rubber_f1ccdfae
  • dow silastic 3730 silicone rubber_f1ccdfae

Features Of Dow SILASTIC 3730 Silicone Rubber

  1. High tear strength and excellent elongation for demanding dynamic sealing applications.

  2. Good compression set resistance at elevated temperatures up to 150 °C.

  3. Biocompatibility compliant with USP Class VI and ISO 10993-5/-10 testing protocols.

  4. Low extractables profile suitable for pharmaceutical and medical device manufacturing.

  5. Platinum-catalyzed, addition-cure chemistry enabling precise control over cure kinetics and minimal byproducts.

Typical Applications Of Dow SILASTIC 3730 Silicone Rubber

  1. Pharmaceutical stoppers and closures for vials and syringes.

  2. Medical tubing and fluid-handling components in drug delivery systems.

  3. Seals and gaskets for sterile processing equipment and bioreactors.

  4. Components for wearable therapeutic devices requiring skin contact compatibility.

  5. Custom molded parts in diagnostic instruments and lab-on-a-chip platforms.

Specifications Of Dow SILASTIC 3730 Silicone Rubber

Chemical TypePlatinum-cured liquid silicone rubber (LSR)
Product FormTwo-part liquid (Part A + Part B), supplied separately
AppearanceTranslucent, low-viscosity liquid
Primary ApplicationsMedical devices, pharmaceutical packaging, bioprocessing components
Key FeaturesUSP Class VI compliant, low extractables, high purity
Shore A Hardness (Cured)30 ± 2
Tensile Strength (Cured)6.0 MPa (typical)
Elongation at Break (Cured)550% (typical)


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