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

Dow DOWSIL 7428 Adhesive

Dow DOWSIL 7428 Adhesive is a high-performance silicone-based structural adhesive offering exceptional adhesion to diverse substrates including metals plastics and glass. It delivers rapid fixture strength excellent thermal stability and outstanding resistance to weathering UV and chemicals. Ideal for demanding industrial bonding applications requiring durability flexibility and reliability across wide temperature ranges.
  • dow dowsil 7428 adhesive_d08337f1
  • dow dowsil 7428 adhesive_d08337f1

Features Of Dow DOWSIL 7428 Adhesive

  1. High-performance, one-component, moisture-curing silicone adhesive with excellent adhesion to glass, aluminum, and painted metal 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 for bonded assemblies subjected to vibration or thermal expansion.

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

  5. Meets ASTM C920 Type S, Grade NS, Class 25, Use T, M, A — compliant with industry standards for structural glazing sealants.

Typical Applications Of Dow DOWSIL 7428 Adhesive

  1. Structural and peripheral bonding of insulating glass (IG) units in commercial façades and curtain walls.

  2. Adhesion of solar photovoltaic (PV) module frames, junction boxes, and mounting hardware.

  3. Sealing and bonding of aluminum composite panels (ACP) and metal cladding systems.

  4. Attachment of signage, lighting fixtures, and decorative elements to glass or metal substrates.

  5. General-purpose bonding in transportation interiors, including bus, train, and RV glazing assemblies.

Specifications Of Dow DOWSIL 7428 Adhesive

Chemical TypeOne-part, moisture-curing, neutral-cure silicone polymer
Product FormPaste-like, thixotropic, non-sag gel in cartridge
AppearanceOpaque white or translucent gray (color may vary by batch)
Primary ApplicationsStructural glazing, IG unit assembly, architectural metal bonding
Key FeaturesLow modulus, high elongation (>100%), UV stable, non-corrosive
Shore A Hardness (7 days, 23°C/50% RH)20–25
Tensile Strength (ASTM C719)≥0.5 MPa
Cure Speed (Surface Dry)Approx. 15–30 minutes (depends on humidity and temperature)


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