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

Dow SILASTIC SE 4709 U Silicone Rubber

Dow SILASTIC SE 4709 U is a high-consistency, platinum-cured silicone rubber from Dow’s SILASTIC® portfolio—offering excellent mechanical strength, thermal stability up to 200°C, and low compression set. Ideal for demanding automotive, medical, and industrial sealing applications requiring FDA-compliant, biocompatible elastomers with consistent cure performance and superior tear resistance.
  • dow silastic se 4709 u silicone rubber_812cef91
  • dow silastic se 4709 u silicone rubber_812cef91

Features Of Dow SILASTIC SE 4709 U Silicone Rubber

  1. Platinum-cured liquid silicone rubber (LSR) with excellent flow and low viscosity for precise mold filling.

  2. Fast cure profile optimized for high-volume injection molding production cycles.

  3. UL 94 V-0 rated flame retardancy without halogen additives, supporting safety-critical applications.

  4. Biocompatibility compliant with ISO 10993-5 and USP Class VI requirements for medical device components.

  5. Outstanding thermal stability across -60 °C to +200 °C continuous service range.

Typical Applications Of Dow SILASTIC SE 4709 U Silicone Rubber

  1. Seals and gaskets for automotive powertrain and EV battery enclosures.

  2. Medical tubing connectors and wearable sensor housings requiring skin contact compatibility.

  3. Consumer electronics interface buttons and protective overmolds for wearables and IoT devices.

  4. Industrial fluid-handling components exposed to oils, coolants, and ozone.

  5. Food-grade appliance seals meeting FDA 21 CFR 177.2600 compliance.

Specifications Of Dow SILASTIC SE 4709 U Silicone Rubber

Chemical TypePlatinum-Cured Liquid Silicone Rubber (LSR)
Product FormTwo-part liquid system (Part A + Part B)
AppearancePale translucent viscous liquid (Part A); colorless to pale yellow liquid (Part B)
Primary ApplicationsInjection-molded medical, automotive, and consumer electronics components
Key FeaturesLow compression set, high tear strength, excellent electrical insulation
BenefitsReduced cycle time, minimal post-cure requirement, consistent part-to-part repeatability
Regulatory ComplianceISO 10993-5, USP Class VI, FDA 21 CFR 177.2600, RoHS compliant
Cure Temperature Range110–170 °C (optimized at 150 °C)


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