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

Dow DOWSIL 7428 Silicone Adhesive

Dow DOWSIL 7428 Silicone Adhesive is a high-performance, one-component, moisture-curing silicone sealant offering excellent adhesion to glass, aluminum, and plastics. It delivers superior weather resistance, UV stability, and thermal cycling performance. Ideal for architectural glazing and structural bonding applications where durability and flexibility are critical.
  • dow dowsil 7428 silicone adhesive_73ea5e95
  • dow dowsil 7428 silicone adhesive_73ea5e95

Features Of Dow DOWSIL 7428 Silicone Adhesive

  1. High-performance, one-component, moisture-curing silicone adhesive with excellent adhesion to challenging substrates including plastics, metals, and painted surfaces.

  2. Offers outstanding resistance to thermal cycling, UV exposure, and long-term weathering without cracking or embrittlement.

  3. Low modulus formulation provides superior flexibility and stress relief in dynamic joints and assemblies subject to vibration or expansion/contraction.

  4. Non-corrosive and acetoxy-free chemistry ensures compatibility with sensitive electronic components and avoids substrate corrosion risks.

  5. Meets UL 94 HB flammability rating and complies with RoHS Directive 2011/65/EU for restricted substances.

Typical Applications Of Dow DOWSIL 7428 Silicone Adhesive

  1. Automotive lighting assembly — bonding polycarbonate lenses to metal or plastic housings.

  2. Electronics encapsulation and gasketing — sealing sensors, control units, and power modules in harsh environments.

  3. Architectural glazing and façade systems — structural and perimeter bonding of glass, aluminum, and composite panels.

  4. Industrial appliance manufacturing — durable bonding of control panels, displays, and trim components exposed to temperature extremes.

  5. Medical device housing assembly — biocompatibility-supporting adhesion where ISO 10993-5 cytotoxicity testing is required (subject to validation).

Specifications Of Dow DOWSIL 7428 Silicone Adhesive

Chemical TypeOne-part, acetoxy-cure silicone polymer
Product FormPaste-like, thixotropic cartridge material
AppearanceOpaque white to off-white paste
Primary ApplicationsStructural bonding, sealing, and gasketing in automotive, electronics, and construction
Key FeaturesMoisture-curing, low modulus, non-corrosive, UV-stable
BenefitsReduces assembly complexity, eliminates need for primers on many substrates, enables rapid handling strength
Cure MechanismAtmospheric moisture at room temperature
Storage Stability12 months unopened at ≤25 °C in original sealed packaging


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