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

Dow DOWSIL 580 Glass, Metal and Masonary Sealant

Dow DOWSIL 580 is a high-performance silicone sealant designed for bonding and sealing glass, metal, and masonry. It offers excellent adhesion, UV resistance, and weatherproof durability without priming. Fast-curing, low-odor, and compliant with ASTM C920 Type S Grade NS. Ideal for architectural glazing and structural joints where reliability and longevity matter.
  • dow dowsil 580 glass metal and masonary sealant_3948010b
  • dow dowsil 580 glass metal and masonary sealant_3948010b

Features Of Dow DOWSIL 580 Glass, Metal and Masonary Sealant

  1. High-performance silicone sealant offering excellent adhesion to glass, anodized aluminum, stainless steel, and common masonry substrates without primer.

  2. Non-sag formulation suitable for vertical and overhead applications, ensuring reliable joint integrity during cure.

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

  4. Neutral-cure chemistry — releases methanol during cure, minimizing corrosion risk on sensitive metals.

  5. Good movement capability (±25% joint movement) to accommodate thermal and structural expansion/contraction.

Typical Applications Of Dow DOWSIL 580 Glass, Metal and Masonary Sealant

  1. Structural and perimeter glazing in commercial curtain wall systems.

  2. Sealing joints between metal panels and framing in architectural cladding assemblies.

  3. Weatherproofing expansion and control joints in precast concrete and brick masonry façades.

  4. Repair and sealing of non-structural gaps in historic building restoration projects.

  5. Industrial equipment enclosures requiring durable, weather-resistant seals on mixed-material surfaces.

Specifications Of Dow DOWSIL 580 Glass, Metal and Masonary Sealant

Chemical TypeAcetoxy-cure silicone elastomer (modified)
Product FormThixotropic paste in cartridge or sausage packaging
AppearanceOpaque white or gray, smooth homogeneous paste
Primary ApplicationsGlazing, metal panel sealing, masonry joint sealing
Key FeaturesPrimerless adhesion, non-sag, UV stable, neutral cure
Shore A Hardness (7 days, 23°C/50% RH)25–35
Approx. Skin Time (23°C/50% RH)15–25 minutes
Full Cure Time (23°C/50% RH, 3mm thickness)24 hours


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