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

Dow DOWSIL 3145 RTV Silicone Adhesive Sealant

Dow DOWSIL 3145 RTV Silicone Adhesive Sealant is a one-part, moisture-curing silicone offering excellent adhesion to metals, plastics, and glass. It provides superior thermal stability, flexibility, and resistance to weathering and UV. Ideal for automotive, electronics, and industrial bonding/sealing applications requiring durable, low-shrinkage performance.
  • dow dowsil 3145 rtv silicone adhesive sealant_393d5bc4
  • dow dowsil 3145 rtv silicone adhesive sealant_393d5bc4

Features Of Dow DOWSIL 3145 RTV Silicone Adhesive Sealant

  1. High-performance, one-component, room-temperature vulcanizing (RTV) silicone adhesive sealant with excellent adhesion to glass, aluminum, stainless steel, and many plastics.

  2. Offers superior resistance to weathering, UV exposure, ozone, and extreme temperatures ranging from –60 °C to +200 °C.

  3. Low modulus formulation provides high flexibility and stress relief in dynamic joints and thermally cycling assemblies.

  4. Non-corrosive, acetoxy-cure chemistry with rapid surface cure and consistent deep-section cure performance.

  5. Meets UL 94 HB flammability rating and complies with RoHS and REACH directives for restricted substances.

Typical Applications Of Dow DOWSIL 3145 RTV Silicone Adhesive Sealant

  1. Automotive lighting assemblies — bonding and sealing of headlamp, tail lamp, and LED modules.

  2. Electronic enclosures and power supply housings requiring environmental protection and thermal management.

  3. Architectural glazing systems — structural and perimeter sealing of insulating glass units (IGUs).

  4. Industrial control panels and sensor housings exposed to outdoor or harsh industrial environments.

  5. White goods and HVAC components where long-term reliability under thermal cycling is critical.

Specifications Of Dow DOWSIL 3145 RTV Silicone Adhesive Sealant

Chemical TypeAcetoxy-cure, condensation-curing silicone polymer
Product FormPaste, thixotropic, single-component
AppearanceOpaque white or translucent gel
Primary ApplicationsAdhesive bonding, sealing, and potting in automotive, electronics, and construction
Key FeaturesRTV cure, low modulus, non-corrosive, UV stable
Shore A Hardness (7 days, 23°C/50% RH)25–35
Tensile Strength (ASTM D412)≈ 1.8 MPa
Service Temperature Range–60 °C to +200 °C (continuous)


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