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

Dow SILASTIC DY 32-903 U Silicone Rubber

Dow SILASTIC DY 32-903 U is a high-consistency, platinum-cured silicone rubber from Dow’s SILASTIC medical-grade elastomer series—designed for extrusion and compression molding. It offers excellent biocompatibility (ISO 10993), thermal stability, low compression set, and consistent rheology. Ideal for demanding healthcare applications like tubing, seals, and implantable device components requiring regulatory compliance and long-term reliability.
  • dow silastic dy 32 903 u silicone rubber_786fddf0
  • dow silastic dy 32 903 u silicone rubber_786fddf0

Features Of Dow SILASTIC DY 32-903 U Silicone Rubber

  1. High consistency and excellent flow control for precision molding of complex geometries.

  2. Platinum-catalyzed addition cure system offering low compression set and outstanding thermal stability.

  3. Excellent biocompatibility, compliant with USP Class VI and ISO 10993-5/10 testing requirements.

  4. Low volatility and minimal extractables, suitable for medical device and pharmaceutical packaging applications.

  5. Good adhesion to various substrates including thermoplastics and metals when used with appropriate primers.

Typical Applications Of Dow SILASTIC DY 32-903 U Silicone Rubber

  1. Implantable and short-term indwelling medical devices (e.g., catheters, ports, and connectors).

  2. Pharmaceutical stoppers and closures requiring low leachables and high chemical resistance.

  3. Disposable diagnostic components such as fluidic manifolds and microfluidic seals.

  4. Wearable health monitoring sensors requiring skin-friendly, flexible encapsulation.

  5. Automotive fluid handling components exposed to elevated temperatures and aggressive media.

Specifications Of Dow SILASTIC DY 32-903 U Silicone Rubber

Chemical TypePlatinum-cured liquid silicone rubber (LSR)
Product FormTwo-part liquid system (Part A + Part B)
AppearanceTranslucent, viscous liquid (Part A); translucent, viscous liquid (Part B)
Primary ApplicationsMedical devices, pharmaceutical packaging, diagnostics, wearables
Key FeaturesUSP Class VI compliant, low extractables, addition cure, high purity
BenefitsConsistent part-to-part reproducibility, minimal post-cure requirements, excellent aging resistance
Cure Temperature Range110–170 °C (recommended mold temperature)
Shelf Life (Unopened, 25 °C)12 months from date of manufacture


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