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

Dow SILASTIC DY 32-403U Silicone Rubber

Dow SILASTIC DY 32-403U is a high-consistency, platinum-cured silicone rubber from Dow’s SILASTIC medical-grade elastomer series—designed for extrusion and compression molding with excellent biocompatibility, thermal stability, and low extractables per USP Class VI and ISO 10993 standards.
  • dow silastic dy 32 403u silicone rubber_b5d2d5c7
  • dow silastic dy 32 403u silicone rubber_b5d2d5c7

Features Of Dow SILASTIC DY 32-403U Silicone Rubber

  1. High-consistency, two-part addition-cure silicone rubber with excellent processability in compression and transfer molding.

  2. Outstanding thermal stability across a wide service temperature range (–60 °C to +200 °C).

  3. Low compression set and superior long-term elasticity for demanding dynamic sealing applications.

  4. Excellent electrical insulation properties and UL 94 HB flammability rating.

  5. Good adhesion to various substrates including metals and engineered plastics without primers.

Typical Applications Of Dow SILASTIC DY 32-403U Silicone Rubber

  1. Automotive under-hood gaskets and vibration-damping components.

  2. Industrial fluid-handling seals exposed to oils, coolants, and mild chemicals.

  3. Electrical enclosures and insulating bushings for power distribution equipment.

  4. Medical device housings requiring biocompatibility-supporting base chemistry (ISO 10993-5 tested).

  5. Appliance door seals and thermal interface pads in white goods.

Specifications Of Dow SILASTIC DY 32-403U Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure silicone rubber
Product FormTwo-part liquid system (Part A: base; Part B: catalyst)
AppearancePart A: translucent off-white viscous liquid; Part B: translucent pale yellow liquid
Shore A Hardness (7 days @ 23 °C)40 ± 2
Tensile Strength (ASTM D412)8.5 MPa typical
Elongation at Break (ASTM D412)450% typical
Density (ASTM D1622)1.18 g/cm³ typical
Cure SystemRoom temperature or elevated temperature (e.g., 150 °C for 5 min)


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