Dowsil 791 Long-Term Elastic Water- Proof Rubber

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.

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