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

Dow DOWSIL 7278 Silicone Adhesive

Dow DOWSIL 7278 Silicone Adhesive is a high-performance, one-component, moisture-curing silicone sealant offering excellent adhesion to glass, aluminum, and plastics. It delivers superior UV resistance, thermal stability from −55°C to 200°C, low modulus elasticity, and outstanding weatherability for demanding automotive, electronics, and construction applications.
  • dow dowsil 7278 silicone adhesive_25e33951
  • dow dowsil 7278 silicone adhesive_25e33951

Features Of Dow DOWSIL 7278 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 for bonded assemblies subject to vibration or thermal expansion.

  4. Non-corrosive and acetoxy-free cure chemistry—safe for use with sensitive electronic components and optical materials.

  5. Good flow and gap-filling capability with controllable tack time, enabling reliable manual or automated dispensing.

Typical Applications Of Dow DOWSIL 7278 Silicone Adhesive

  1. Automotive lighting assembly—including headlamp and taillamp bonding of polycarbonate lenses to metal or plastic housings.

  2. Electronics encapsulation and gasketing for outdoor sensors, control units, and LED modules requiring environmental sealing.

  3. Architectural glazing and façade systems where durable, elastic bonding of glass, aluminum, and coated substrates is required.

  4. Appliance manufacturing for bonding decorative trims, control panels, and internal structural components exposed to temperature fluctuations.

  5. Medical device assembly for non-invasive enclosures and housings requiring biocompatibility-supporting processing and low extractables.

Specifications Of Dow DOWSIL 7278 Silicone Adhesive

Chemical TypeOne-part, condensation-cure, acetoxy-free silicone adhesive
Product FormPaste-like, thixotropic, ready-to-use cartridge material
AppearanceOpaque white to off-white paste
Primary ApplicationsStructural bonding, sealing, and gasketing in automotive, electronics, and architectural markets
Key FeaturesFlexible, non-corrosive, UV-stable, good substrate adhesion, moisture-curing
BenefitsReduces assembly complexity, eliminates need for primers on many substrates, supports high-speed production
Cure MechanismMoisture-cured at ambient temperature; full cure typically achieved within 7 days (depends on thickness and humidity)
Storage ConditionsStore in original unopened container at 10–25°C; protect from moisture and direct sunlight


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