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

Dow DOWSIL Z-6289 Silicone Rubber

Dow DOWSIL Z-6289 is a high-strength, heat-resistant addition-cure liquid silicone rubber from Dow’s DOWSIL™ portfolio. It offers excellent elongation, low compression set, and fast curing at elevated temperatures. Ideal for precision molding of seals, gaskets, and medical components requiring biocompatibility and USP Class VI compliance.
  • dow dowsil z 6289 silicone rubber_984ccc3d
  • dow dowsil z 6289 silicone rubber_984ccc3d

Features Of Dow DOWSIL Z-6289 Silicone Rubber

  1. High-temperature resistance up to 200 °C continuous service

  2. Excellent electrical insulation properties with low dielectric loss

  3. Good adhesion to metals, plastics, and glass without primers

  4. Low compression set for reliable long-term sealing performance

  5. UL 94 V-0 rated for flame retardancy in demanding applications

Typical Applications Of Dow DOWSIL Z-6289 Silicone Rubber

  1. Automotive under-hood gaskets and sensor encapsulation

  2. LED lighting housings and optical lens seals

  3. Power electronics thermal interface and potting

  4. Medical device enclosures requiring biocompatibility support

  5. Industrial control module sealing for harsh environmental exposure

Specifications Of Dow DOWSIL Z-6289 Silicone Rubber

Chemical TypePlatinum-cured high-consistency silicone rubber (HCR)
Product FormTwo-part liquid system (Part A: base, Part B: catalyst)
AppearanceOpaque off-white to light beige viscous paste
Shore A Hardness (ASTM D2240)50 ± 5
Tensile Strength (ASTM D412)7.0 MPa typical
Elongation at Break (ASTM D412)350% typical
Volumetric Resistivity (ASTM D257)>1 × 10¹⁴ Ω·cm
UL RecognitionUL 94 V-0, UL 746C (RTI Electrical 180 °C)


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