DOWSIL™ 791 Weatherproofing Sealant

What is DOWSIL™ 791 Weatherproofing Sealant?

Dow's one-part, medium-modulus silicone sealant for weathersealing applications. Available in multiple colors and cures to form flexible and durable joints. Sustainability: Low embodied carbon DOWSIL™ Silicone. Project-specific DOW Carbon Neutrality Certificate on request. Externally verified carbon neutrality according to PAS 2060. Carbon Neutrality with DOW Carbon “INSETS” and reduce carbon footprint. Green Building certification: contributes to getting additional credits. Enhance carbon balance (>20x) with long-term durable façade silicones.

Uses

General weathersealing joints
Glazing and curtain wall weathersealing joints
Building façade weathersealing joints

Benefits

Ease of application – ready to use as supplied
Excellent rheology, low string upon gunning
Excellent weatherability, virtually unaffected by sunlight, rain, snow, ozone
Medium-modulus
± 50% joint movement capability
Low odor
Sustainability: Low embodied carbon DOWSIL™ Silicone.
Project specific DOW Carbon Neutrality Certificate on request
Externally verified carbon neutrality according to PAS 2060
Carbon Neutrality with DOW carbon “INSETS” and reduce carbon footprint
Green Building certification: contributes to getting additional credits
Enhance carbon balance (>20x) with long-term durable façade silicones

Properties

app.properties.Title
Primerless Adhesion	Primerless

cert.standards.properties.Title
Regulatory Approvals	UL Recognized

product.use.formulating.properties.Title
Cure System	1-Part Cure
Room Temperature Cure - Days	7 to 14 Days
Tack-free Time (50% RH)	45 Minutes
Where Used	Job Site
Working Time	20 Minutes

sustainability.safety.properties.Title
Sustainability Claim	Low embodied carbon DOWSIL™ Silicone

typical.properties.Title
Adhesion to	Alodine Aluminum, Aluminum, Anodized Aluminum, Brickwork, Concrete, Enamelled and Reflective Glass, Extruded Mill Finish, Fluorocarbon Coated Aluminum, Glass, Granite, Heat Strengthened Glass, Light-Weight Stone Panels, Limestone, Low E Coated Glass, Marble, Masonry, Metal, Metal Panels, Paint, Plastic, Polyester Powder Coated Aluminum/Steel, Silicone, Stainless Steel, Steel, Stone, Vinyl/PVC-U, Wood
Appearance	Opaque
Chemistry	Neutral
Color	Black, Bronze, Camel, Grey, Limestone, Precast White, White
Durometer - Shore A	25-30
Flow/Sag (Slump)	0 mm
Movement	Medium
Movement Capability	-50 to 50 %
Specific Gravity @ 25°C	1.51
Substrate	Non-porous
Tensile Adhesion (T/A)	120 psi
Volatile Organic Content	45 g/liter