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

Dow DOWSIL 798 Silicone Sealant

Dow DOWSIL 798 Silicone Sealant is a high-performance, one-component, moisture-curing silicone adhesive sealant from Dow’s DOWSIL™ portfolio. It offers excellent adhesion to glass, aluminum, and coated metals, superior weather resistance, low VOC emissions, and remains flexible across wide temperature ranges—ideal for structural glazing and façade applications.
  • dow dowsil 798 silicone sealant_b7940301
  • dow dowsil 798 silicone sealant_b7940301

Features Of Dow DOWSIL 798 Silicone Sealant

  1. Acetoxy-cure silicone formulation offering rapid surface cure and excellent adhesion to glass, aluminum, and common construction substrates.

  2. Non-corrosive to metals and safe for use with sensitive electronic components and architectural glazing systems.

  3. Excellent resistance to weathering, UV radiation, ozone, and extreme temperature fluctuations (–40 °C to +150 °C).

  4. Low modulus elasticity ensures high movement capability (±25% joint movement) without loss of integrity.

  5. One-component, ready-to-use paste with thixotropic consistency for vertical and overhead application without sagging.

Typical Applications Of Dow DOWSIL 798 Silicone Sealant

  1. Structural and perimeter sealing of insulating glass units (IGUs) in commercial façades and curtain walls.

  2. Weatherproofing of aluminum-framed windows, skylights, and storefront systems.

  3. Sealing of non-structural joints in precast concrete and metal cladding assemblies.

  4. General-purpose bonding and sealing in HVAC ductwork and cleanroom construction.

  5. Secondary sealing in solar panel frame mounting and photovoltaic module assembly.

Specifications Of Dow DOWSIL 798 Silicone Sealant

Chemical TypeAcetoxy-cure silicone elastomer
Product FormThixotropic paste in sausage cartridge or pail
AppearanceOpaque white, off-white, or translucent gel (color options available)
Primary ApplicationsArchitectural glazing, IGU secondary seal, metal and glass joint sealing
Key FeaturesRapid acetoxy cure, non-corrosive, high UV stability, low modulus
BenefitsFast handling strength, long-term durability, substrate compatibility, ease of tooling
Cure MechanismMoisture-curing at ambient temperature
Shelf Life12 months unopened under dry, cool storage conditions (≤25 °C)


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