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

Dow DOWSIL 7657 Silicone Adhesive

Dow DOWSIL 7657 Silicone Adhesive is a one-component, moisture-curing RTV silicone sealant offering excellent adhesion to glass, metals, and plastics. It delivers high flexibility, thermal stability from −55°C to 200°C, low compression set, and superior resistance to weathering and UV exposure—ideal for automotive, electronics, and construction bonding/sealing applications.
  • dow dowsil 7657 silicone adhesive_efab3fba
  • dow dowsil 7657 silicone adhesive_efab3fba

Features Of Dow DOWSIL 7657 Silicone Adhesive

  1. High-performance, one-component, moisture-curing silicone adhesive with excellent adhesion to glass, aluminum, stainless steel, and painted substrates.

  2. Offers outstanding resistance to thermal cycling, UV exposure, and weathering for long-term durability in outdoor applications.

  3. Low modulus formulation provides superior flexibility and stress relief, minimizing risk of substrate cracking or bond failure.

  4. Non-corrosive and acetoxy-free chemistry—safe for use with sensitive electronic components and architectural metals.

  5. Good sag resistance and thixotropic rheology enable precise application and vertical bonding without slumping.

Typical Applications Of Dow DOWSIL 7657 Silicone Adhesive

  1. Structural glazing and insulating glass unit (IGU) edge sealing in commercial façades and curtain walls.

  2. Bonding and sealing of solar photovoltaic (PV) modules, including frame-to-glass and junction box attachments.

  3. Automotive lighting assemblies, including headlamp and taillamp lens bonding where optical clarity and thermal stability are required.

  4. Sealing and bonding of HVAC enclosures, control panels, and industrial equipment housings exposed to temperature fluctuations.

Specifications Of Dow DOWSIL 7657 Silicone Adhesive

Chemical TypeOne-part, moisture-curing, acetoxy-free silicone elastomer
Product FormPaste, thixotropic, cartridge-ready
AppearanceOpaque white to off-white viscous paste
Primary ApplicationsStructural bonding, perimeter sealing, and gasketing in architectural, solar, and transportation industries
Key FeaturesLow modulus, non-corrosive, UV-stable, excellent adhesion without primer on common substrates
BenefitsReduces assembly time, eliminates need for primers, withstands -40 °C to +150 °C service temperatures
Cure MechanismMoisture-curing (surface cure in ~30 min; full cure in 7 days at 23 °C / 50% RH)
VOC Content<10 g/L (compliant with EU Directive 2004/42/EC)


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