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

Dow DOWSIL Q3-6611 Silicone Adhesive

Dow DOWSIL Q3-6611 Silicone Adhesive is a one-component, moisture-curing, high-strength elastomeric adhesive. It bonds well to metals, plastics, and glass without primers, offers excellent thermal stability (–55°C to 200°C), low compression set, and outstanding resistance to weathering, UV, and chemicals—ideal for demanding industrial and automotive sealing applications.
  • dow dowsil q3 6611 silicone adhesive_dc1b1ab2
  • dow dowsil q3 6611 silicone adhesive_dc1b1ab2

Features Of Dow DOWSIL Q3-6611 Silicone Adhesive

  1. One-component, moisture-curing silicone adhesive offering excellent adhesion to glass, metals, and many plastics without primer.

  2. High elongation (>400%) and superior flexibility for dynamic joint applications subject to thermal or mechanical stress.

  3. Excellent resistance to UV radiation, ozone, and extreme temperatures (–55 °C to +200 °C continuous).

  4. Low modulus formulation minimizes stress transfer to bonded substrates, reducing risk of cracking or delamination.

  5. Non-corrosive cure chemistry — acetoxy-free — safe for sensitive electronic components and non-reactive with copper or silver.

Typical Applications Of Dow DOWSIL Q3-6611 Silicone Adhesive

  1. Structural bonding and sealing in architectural glazing systems (e.g., curtain walls, skylights).

  2. Electronic encapsulation and component fixation in LED lighting assemblies and power modules.

  3. Automotive lighting assembly — lens-to-housing bonding requiring long-term optical clarity and weather resistance.

  4. Industrial appliance gasketing and panel bonding where vibration damping and thermal cycling performance are critical.

  5. Medical device housing assembly requiring biocompatibility-compliant materials and low outgassing.

Specifications Of Dow DOWSIL Q3-6611 Silicone Adhesive

Chemical TypeCondensation-cure, acetoxy-free silicone elastomer
Product FormPaste-like, thixotropic, single-component liquid
AppearanceTranslucent, off-white to light beige
Primary ApplicationsStructural bonding, sealing, and gasketing in demanding industrial environments
Key FeaturesHigh elongation, low modulus, primerless adhesion, UV/ozone stability
BenefitsReduced assembly time, enhanced durability under thermal cycling, compatibility with sensitive electronics
Cure MechanismMoisture-cured at ambient temperature; full cure depth ~3–4 mm in 24 h (23 °C / 50% RH)
Shelf Life12 months unopened in original sealed container at ≤25 °C


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