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

DOW DOWSIL 4-8012 Silicone Sealant And Adhesive

DOW DOWSIL 4-8012 Silicone Sealant And Adhesive is a high-performance, one-component, moisture-curing silicone formulation offering excellent adhesion to glass, metals, and plastics. It delivers superior UV resistance, thermal stability from −55°C to 200°C, low volatility, and outstanding flexibility. Ideal for aerospace, electronics, and automotive sealing applications where reliability under extreme conditions is critical.
  • dow dowsil 4 8012 silicone sealant and adhesive_ebd7c489
  • dow dowsil 4 8012 silicone sealant and adhesive_ebd7c489

Features Of DOW DOWSIL 4-8012 Silicone Sealant And Adhesive

  1. High-performance, one-component, moisture-curing silicone adhesive/sealant with excellent adhesion to glass, aluminum, anodized metals, and many plastics without primer.

  2. Exceptional resistance to weathering, UV radiation, ozone, and extreme temperatures (–40 °C to +150 °C continuous service).

  3. Low modulus formulation provides superior flexibility and movement capability (±25% joint movement accommodation).

  4. Non-corrosive to sensitive substrates including copper, brass, and electronics—ideal for precision assembly applications.

  5. Meets ASTM C920 Type S, Grade NS, Class 25, T, M, G, O, and UL 94 HB flammability requirements.

Typical Applications Of DOW DOWSIL 4-8012 Silicone Sealant And Adhesive

  1. Structural glazing and insulating glass unit (IGU) secondary sealants in architectural façades.

  2. Bonding and sealing of solar panel frames, junction boxes, and photovoltaic module encapsulation.

  3. Electronic assembly: potting, gasketing, and conformal coating for sensors, LED lighting housings, and control enclosures.

  4. Aerospace interior trim bonding where low outgassing and flame retardancy are critical.

  5. Automotive lighting assemblies, including headlamp and taillamp sealing requiring long-term optical clarity and durability.

Specifications Of DOW DOWSIL 4-8012 Silicone Sealant And Adhesive

Chemical TypeAcetoxy-cure silicone polymer
Product FormPaste, thixotropic, non-sag
AppearanceTranslucent amber, uniform paste
Primary ApplicationsAdhesive bonding, structural sealing, electronic encapsulation
Key FeaturesPrimerless adhesion, low modulus, UV stable, non-corrosive
Shore A Hardness (7 days, 23°C/50% RH)20–25
Specific Gravity (25°C)1.02–1.06
VOC Content<10 g/L (compliant with EU Directive 2004/42/EC)


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