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

Dow SILASTIC SE 1647 U Silicone Rubber

Dow SILASTIC SE 1647 U is a high-strength, platinum-cured liquid silicone rubber (LSR) from Dow’s SILASTIC® portfolio. It offers excellent flow, low viscosity, fast cure, and outstanding thermal stability—ideal for precision injection molding of medical, automotive, and consumer parts requiring biocompatibility and durability.
  • dow silastic se 1647 u silicone rubber_851e3fcc
  • dow silastic se 1647 u silicone rubber_851e3fcc

Features Of Dow SILASTIC SE 1647 U Silicone Rubber

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

  2. Outstanding resistance to compression set, maintaining seal integrity over extended service life.

  3. Good processability in liquid injection molding (LIM) and compatible with automated production lines.

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

  5. Low extractables profile suitable for sensitive applications in healthcare and pharmaceutical packaging.

Typical Applications Of Dow SILASTIC SE 1647 U Silicone Rubber

  1. Medical tubing connectors and fluid path components in diagnostic and drug delivery systems.

  2. Seals and gaskets for implantable and wearable medical devices.

  3. Pharmaceutical stoppers and closures for vials and cartridges.

  4. Soft-touch overmolding on surgical instrument handles and patient interface surfaces.

Specifications Of Dow SILASTIC SE 1647 U Silicone Rubber

Chemical TypePlatinum-cured liquid silicone rubber (LSR)
Product FormTwo-part liquid (Part A + Part B), supplied separately
AppearanceTranslucent, low-viscosity liquid
Shore A Hardness (Cured)40 ± 3
Tensile Strength (Cured)≥ 7.0 MPa
Elongation at Break (Cured)≥ 500 %
Compression Set (22 h @ 150°C)≤ 25 %
BiocompatibilityISO 10993-5 (cytotoxicity), USP Class VI compliant


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