RCD Corporation® PS·1 Mastic® is a low VOC air duct sealant and adhesive-sealant used for permanently sealing the fabricated joints and seams of sheet metal air ducts, UL-181 listed rigid fiberglass air ducts, UL-181 listed flexible air ducts and thermal insulation. It is also ideal for repairing damaged and leaking air ducts and sealing conditioned spaces from air infiltration.

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Water-based & Non-Flammable Fire Resistant Weather Resistant Easy application & Clean-Up Low VOC	Contains Ceramic Microspheres Fiber Reinforced
Adheres to most construction surfaces, including but not limited to:
Aluminum Foil Aluminum Foil Scrim Calcium Silicate Insulation Cellular Glass Fiberglass Insulation Galvanized Steel Gypsum board Concrete	Masonry Polystyrene Foam Polyurethane Foam Polyester Plastic Primered Steel PVC Plastic Sheet Aluminum Wood