Dow Dowsil 791 Black 300ml (Box of 24) Weatherproofing Sealant

What is DOWSIL 791 Weatherproofing Sealant

A one-part, medium-modulus, neutral-curing silicone elastomeric sealant for weathersealing applications. It is available in multiple colors and cures to form a flexible and durable silicone rubber weatherseal joint for the building.

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

Application Benefits

• Primerless Adhesion - Primerless

Product Use and Formulating

• 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

Typical Properties

• 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