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

Dow DOWSIL 785 Silicone Rubber

Dow DOWSIL 785 Silicone Rubber is a one-component, moisture-curing RTV elastomer offering excellent adhesion to glass, metals, and plastics without primers. It delivers high elongation, low compression set, and stable performance from −55°C to 180°C. Ideal for sealing, gasketing, and bonding in automotive, electronics, and construction applications.
  • dow dowsil 785 silicone rubber_31cae842
  • dow dowsil 785 silicone rubber_31cae842

Features Of Dow DOWSIL 785 Silicone Rubber

  1. One-component, room-temperature vulcanizing (RTV) silicone rubber with excellent adhesion to glass, aluminum, and painted surfaces.

  2. Low modulus formulation providing high flexibility and stress relief in dynamic sealing applications.

  3. Outstanding resistance to UV radiation, ozone, and extreme temperatures (–40 °C to +150 °C continuous).

  4. Non-corrosive cure chemistry — acetoxy-curing system that produces non-acidic byproducts during curing.

  5. Good electrical insulation properties and low compression set for long-term sealing integrity.

Typical Applications Of Dow DOWSIL 785 Silicone Rubber

  1. Structural glazing sealant for curtain wall and façade systems.

  2. Weatherproofing and perimeter sealing of architectural aluminum windows and doors.

  3. Joint sealing in precast concrete and metal cladding assemblies.

  4. Sealing of solar panel frames and photovoltaic module edges.

  5. General-purpose bonding and sealing in transportation and industrial equipment enclosures.

Specifications Of Dow DOWSIL 785 Silicone Rubber

Chemical TypeAcetoxy-curing, one-part silicone rubber
Product FormThixotropic paste in cartridge or sausage packaging
AppearanceOff-white to light gray, homogeneous paste
Primary ApplicationsArchitectural glazing, weathersealing, structural bonding
Key FeaturesRTV cure, excellent adhesion, UV/ozone resistant, flexible
Shore A Hardness (7 days, 23 °C/50% RH)25–30
Specific Gravity (25 °C)1.45–1.55
Service Temperature Range–40 °C to +150 °C (continuous)


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