Duct Mastic Sealant 2 Gallon

A non-toxic 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.

Water-based and non-flammable High solids content Fiber reinforced Excellent longevity	Fire resistant Weather Resistant Elastomeric Easy application and clean-up
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

Features
CCWI - 181 is a versatile, all purpose duct sealant for use on all types of metal duct, glass fiber duct board, and flex duct, as well as duct fabric and flexible tubing runouts. CCWI - 181 incorporates a built-in polyester reinforcement for exceptional strength, with UV inhibitors for outdoor use. -CCWI-181 is UL 181A-M & UL181B-M Listed -Passes ASTM C-731, D-2202 USDA, EPA & FDA Approved LEED compliant SCAQMD Rule 1168. -City of Los Angeles Approval RR #8427