Dow -DOWSIL™ 791 Weatherproofing Sealant

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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.

Category: UV resistant sealants | caulking compounds | elastomeric sealants...

MasterFormat: Joint Protection | Joint Sealants



Dow
Corporate Center
PO Box 994
Midland, MI 48686
Tel: (586) 496-4000

fixspec@dow.com

https://www.dow.com/en-us.html

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Overview


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. 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
  • 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


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Specifications

Application Benefits
Primerless AdhesionPrimerless
Certifications & Standards
Regulatory ApprovalsUL Recognized
Product Use and Formulating
Cure System1-Part Cure
Room Temperature Cure - Days7 to 14 Days
Tack-free Time (50% RH)45 Minutes
Where UsedJob Site
Working Time20 Minutes
Sustainability & Safety
Sustainability ClaimLow embodied carbon DOWSIL™ Silicone
Typical Properties
Adhesion toAlodine 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
AppearanceOpaque
ChemistryNeutral
ColorBlack, Bronze, Camel, Grey, Limestone, Precast White, White
Durometer - Shore A25-30
Flow/Sag (Slump)0 mm
MovementMedium
Movement Capability-50 to 50 %
Specific Gravity @ 25°C1.51
SubstrateNon-porous
Tensile Adhesion (T/A)120 psi
Volatile Organic Content45 g/liter