DOWSIL™ 790 Silicone Building Sealant

Overview

Properties

Technical Content

Sample Options

Buying Options

What is DOWSIL™ 790 Silicone Building Sealant?

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.

Uses

Weathersealing joints between natural stone
Curtainwall and mullion weatherseal joints
Expansion and control weatherseal joints
Precast concrete panel and many other construction weatherseal joints

Benefits

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

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Properties

Application Benefits
Primerless Adhesion	Primerless
Resistance Type	Thermal Resistance, UV Resistance, Water Resistance
Water Resistant	true

Product Use and Formulating
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

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, Bronze, Champagne, Charcoal Gray, Gray, Limestone, Natural Stone, Precast White, Sandstone, White, Window Bronze (sausages only)
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