#7med

 



 

RCD Corporation® #7 Mastic® is a water-borne air duct sealant used for permanently sealing the fabricated joints and seams of sheet metal air ducts, rigid fiberglass air ducts, flexible air ducts and thermal insulation. RCD Corporation® #7 Mastic® is a premium grade sealant used  for repairing damaged, leaking air ducts and sealing conditioned spaces from air infiltration. The U.S. Environmental Protection Agency's Energy Star® program recommends insulating and sealing air ducts.  Sealing and insulating air ducts along with home sealing and crawl space sealing will improve indoor air quality, reduce excess humidity and significantly reduce energy costs.

• Water-Borne & Non-Flammable
• Weather Resistant
• Contains Ceramic Microspheres
• Preferred By Professionals Nationwide
• Earns LEED Credits
• Elastomeric
• High Solids Content
• Fast Drying
• Easy Application & Clean-up

 


Adheres to many substrates, like:

 

• Aluminum & Aluminum Foil
• Calcium Silicate Insulation
• Cellular Glass
• Cellulose Insulation
• Cement Backer Board
• Closed Cell Foam
• Concrete & Masonry
• Drywall, Gypsum Board

• Fiberglass Insulation
• Foam-Plastic Insulation
• Galvanized Steel
• House Wrap
• Mineral Wool Insulation
• Paper
• Perlite Insulation
• Polyethylene Plastic

• Polystyrene Foam
• Polyurethane Foam
• Polyester Plastic
• Primed Steel
• PVC Plastic
• Spray Foam Insulation
• Stainless Steel
• Wood, Particle & Chip Board