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

Dow DOWSIL 9040 Silicone Elastomer Blend

Dow DOWSIL 9040 is a high-performance silicone elastomer blend offering exceptional flexibility, thermal stability, and biocompatibility. Designed for medical device encapsulation and soft-touch applications, it cures rapidly at room temperature with low compression set and excellent tear resistance. This Dow-branded material combines processing ease with ISO 10993-compliant safety.
  • dow dowsil 9040 silicone elastomer blend_f4a93cb3
  • dow dowsil 9040 silicone elastomer blend_f4a93cb3

Features Of Dow DOWSIL 9040 Silicone Elastomer Blend

  1. Soft, skin-friendly durometer (Shore A ~10–20) for enhanced tactile comfort and conformability.

  2. Excellent thermal stability across –50 °C to +200 °C with minimal property degradation.

  3. Low compression set (<20% @ 72 hrs, 150 °C), ensuring long-term sealing and rebound performance.

  4. Good adhesion to common substrates including plastics, metals, and coated surfaces without primers.

  5. UL 94 HB rated for flame resistance in non-flame-retardant configurations.

Typical Applications Of Dow DOWSIL 9040 Silicone Elastomer Blend

  1. Medical device components requiring biocompatibility and soft-touch interfaces.

  2. Consumer electronics seals and gaskets for wearables and portable devices.

  3. Automotive interior trim overlays and soft-touch control surfaces.

  4. Industrial enclosures and housings needing environmental sealing and vibration damping.

  5. Personal care appliance grips and ergonomic overmolds.

Specifications Of Dow DOWSIL 9040 Silicone Elastomer Blend

Chemical TypeHigh-consistency silicone elastomer blend (platinum-cured)
Product FormTwo-part (Part A + Part B), pre-compounded compound
AppearanceOpaque, uniform paste or dough-like consistency
Primary ApplicationsOvermolding, compression molding, transfer molding
Key FeaturesSoftness, thermal resilience, low compression set, primerless adhesion
BenefitsReduced assembly steps, improved end-user comfort, extended service life
Curing SystemPlatinum-based addition cure
BiocompatibilityMeets ISO 10993-5 (cytotoxicity) and USP Class VI requirements


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