#10 Mastic® Low to High Velocity Air Duct Sealant is water-borne and fiber reinforced and is used for sealing the fabricated joints and seams of UL listed rigid fiberglass air ducts, UL listed flexible air ducts, crawl space vapor retarders, and thermal insulation. Seals damaged, leaking air ducts and conditioned spaces from air infiltration. Easily applied by brush, trowel, palm or spray equipment. Click on Technical Bulletin button below for recommended spray and extrusion equipment.
#10 Mastic® Applied to Duct Joint