RCD Corporation® PS·1 Mastic® is a fiber reinforced, non-toxic, low VOC air duct sealant used for permanently sealing the fabricated joints and seams of sheet metal air ducts, UL listed rigid fiberglass air ducts, UL listed flexible air ducts, crawl space vapor retarders, and thermal insulation. Seals damaged and leaking air ducts and conditioned spaces from air infiltration. Easily applied by brush, trowel, palm, or spray equipment.

Water-Borne & Non-Flammable Weather Resistant Fiber Reinforced Contains Ceramic Microspheres Low Odor Low VOC (less than 10 grams/liter)	Fire Resistant Earn LEED Credits Elastomeric High Solids Content Easy Application & Clean-up
Adheres to most construction surfaces, including but not limited to:
Aluminum & Aluminum Foil Calcium Silicate Insulation Cellular Glass Insulation Cellulose Insulation Cement Backer Board Closed Cell Foam Rubber Concrete & Masonry Drywall or 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 and Chip Board