DOWSIL™ 790 Silicone Building Sealant 20oz Sausage


A one-component, neutral-curing, medium modulus silicone sealant intended for weatherseal and structural applications with excellent adhesion to a wide range of materials, including glass, metal and aluminum.

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A one-part, ultra-low-modulus, neutral-curing silicone elastomeric sealant for use in high-movement weathersealing applications. It has excellent primerless adhesion to concrete and most porous substrates and is available in a wide variety of colors.
  • Weathersealing joints between natural stone
  • Curtainwall and mullion weatherseal joints
  • Expansion and control weatherseal joints
  • Precast concrete panel and many other construction weatherseal joints
  • Suitable for porous substrates
  • Excellent unprimed adhesion to masonry, concrete and natural stone substrates
  • Low-staining and plasticizer free
  • Ultra-low-modulus
  • Extension/compression joint movment capability of +100/-50%
  • Excellent performance even in building joints that experience extreme movement
  • Conforms to ISO 11600F-25LM
  • Excellent weathering properties and resistance to sunlight, rain, snow, and temperature extremes
  • Easy application over a wide temperature range
Typical Properties
Adhesion to Brickwork, Ceramic, Concrete, Extruded Mill Finish, Glass, Granite, Heat Strengthened Glass, Light-Weight Stone Panels, Limestone, Low E Coated Glass, Marble, Masonry, Paint, Silicone, Stone, Wood
Appearance Opaque
Chemistry Neutral
Color Adobe Tan, Black, Blue Spruce, Bronze, Charcoal Gray, Dusty Rose, Gray, Limestone, Natural Stone, Precast White, Rustic Brick, Sandstone, White
Durometer - Shore A 15 Shore A
Movement High
Peel Strength 25 ppi
Shelf Life 360 Days
Substrate Porous
Tensile Strength 100 psi
Volatile Organic Content 23 g/liter
Application Benefits
Primerless Adhesion Primerless
Resistance Type Thermal Resistance, UV Resistance, Water Resistance
Water Resistant true
Processing-Formulating Benefits
Cure System 1-Part Cure
Number of Parts One
Room Temperature Cure - Hours 168 to 336 Hours
Tack-Free Time-50% RH 60 Minutes
Where Used Job Site
Working Time 10 to 20 Minutes

Additional information

Weight 2.5 lbs
Dimensions 1 × 1 × 1 in

Adobe Tan, Black, Blue Spruce, Bronze, Charcoal, Dusty Rose, Gray, Limestone, Natural Stone, Precast White, Rustic Brick, Sandstone, White