DOWSIL 791 Weatherproofing Sealant

A one-part, medium-modulus, elastomeric sealant designed for general weathersealing. It is a silicone formulation that cures to a flexible and curable silicone rubber building joint seal.
20 units per box

Uses:

• General glazing and weather sealing in curtain wall and building facades

Benefits:

• Ease of application – ready to use as supplied
• Excellent rheology, low string upon gunning
• Excellent weatherability, virtually unaffected by sunlight, rain, snow, ozone
• Neutral cure
• Low odor

Properties

These values are not intended for use in preparing specifications.

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
Application Temperature Range 4 to 40 °C
Chemistry Neutral
Color Black, Bronze, Custom, Dark Grey, Grey, Limestone, Metal Grey, Precast White, White
Cure System 1-Part Cure
Durometer - Shore A 25 to 30 Shore A
Flow NonSag
Flow/Sag (Slump) 0 mm
Movement Medium
Movement Capability -50 to 50 %
Primerless Adhesion Primerless
Room Temperature Cure - Days 7 to 14 Days
Service Temperature High 150 °C
Service Temperature Low -50 °C
Specific Gravity @ 25°C 1.51
Substrate: Non-porous
Tack-Free Time-50% RH: 45 Minutes
Tensile Adhesion (T/A): 120 psi
Volatile Organic Content: 45 g/liter
Where Used: Job Site
Working Time: 20 Minutes