Dap 08643 Aluminum Silicone Sealant 10.1 Oz

Product Description

The DAP 08643 is a 100% silicone sealant in an aluminum-pigmented formulation, packaged in a standard 10.1 oz cartridge. Silicone-based sealants cure to a flexible, durable bead that resists temperature extremes, moisture, and UV exposure. This product is suited for sealing joints, penetrations, and transitions on metal surfaces where a color-matched, long-lasting seal is required. HVAC technicians, sheet metal workers, and plumbers commonly apply this sealant during equipment installation, ductwork fabrication, and pipe penetration sealing. The aluminum coloring blends with bare metal and galvanized surfaces for a clean finished appearance.

This sealant is appropriate for residential and light commercial applications involving metal ductwork, flashing, rooftop equipment curbs, and similar installations. It is commonly used to seal around exhaust flues, vent connectors, metal roof penetrations, and HVAC cabinet seams. The 10.1 oz cartridge fits standard caulk guns for easy single-hand application in the field.

Key Features

• 100% silicone formulation for long-term flexibility and adhesion
• Aluminum pigmentation for color-match on bare metal and galvanized surfaces
• 10.1 oz cartridge fits standard caulk guns
• Resistant to moisture, temperature cycling, and UV exposure
• Suitable for metal-to-metal and metal-to-masonry joints

Compatibility

Designed for use on metal surfaces including galvanized steel, aluminum, and similar substrates commonly found in HVAC, plumbing, and sheet metal applications.

Installation Notes

Application is performed using a standard caulk gun. Surfaces should be clean, dry, and free of oil, dust, and loose material before applying the sealant. Allow adequate cure time before exposing the joint to moisture or mechanical stress. Follow local building and mechanical codes regarding sealant use on flue venting, combustion air openings, and pressurized systems.

Technical Specifications

• Net Volume: 10.1 oz
• Formulation: 100% Silicone
• Color: Aluminum
• Container Type: Cartridge

Standard Information

• Brand: DAP
• Manufacturer Part Number: 08643 10.1oz dow al