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

Dow SILASTIC SE 1644 U Silicone Rubber

Dow SILASTIC SE 1644 U is a high-consistency, platinum-cured silicone rubber from Dow’s SILASTIC® portfolio. It offers excellent mechanical strength, thermal stability up to 200°C, and low compression set. Ideal for extrusion and injection molding of seals, gaskets, and medical components requiring biocompatibility per ISO 10993.
  • dow silastic se 1644 u silicone rubber_b31dad7d
  • dow silastic se 1644 u silicone rubber_b31dad7d

Features Of Dow SILASTIC SE 1644 U Silicone Rubber

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

  2. Outstanding compression set resistance after prolonged exposure to elevated temperatures.

  3. Good processability in liquid injection molding (LIM) systems with low viscosity and controlled pot life.

  4. Meets ISO 10993-5 cytotoxicity requirements, suitable for medical device components.

  5. Excellent thermal stability across a wide operating range (–60 °C to +200 °C).

Typical Applications Of Dow SILASTIC SE 1644 U Silicone Rubber

  1. Medical tubing and fluid handling components in diagnostic and therapeutic devices.

  2. Seals and gaskets for automotive under-hood sensors and electronic housings.

  3. Consumer healthcare wearable interfaces requiring skin-safe, flexible elastomers.

  4. Pharmaceutical processing equipment parts exposed to steam sterilization cycles.

  5. Custom molded components for precision industrial automation systems.

Specifications Of Dow SILASTIC SE 1644 U Silicone Rubber

Chemical TypePlatinum-cured liquid silicone rubber (LSR)
Product FormTwo-component liquid system (Part A + Part B)
AppearanceTranslucent, low-viscosity liquid
Primary ApplicationsMedical devices, automotive sensors, industrial seals
Key FeaturesLow compression set, high biocompatibility, LIM-compatible
BenefitsReduced part warpage, consistent cycle times, regulatory-ready formulation
Curing MethodHeat-cured (150–180 °C)
Shelf Life12 months at 25 °C (unopened, original packaging)


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