RCD Corporation® #6 Mastic® low to high velocity air duct sealant is a fiber reinforced, water-borne, white, UL listed, flexible, sealant used to permanently seal the joints and seams of flexible air ducts, ductboard (rigid fiberglass air duct), sheet metal air ducts, thermal insulation, crawl space vapor retarder, house wrap and UL Listed air ducts. #6 Mastic® seals leaks in return air ducts, supply ducts, air handlers, plenums, grilles, registers, dampers and boots and is used in home sealing to reduce air infiltration into the living area. Sealing the home from air infiltration, sealing air ducts and crawl space sealing improves indoor air quality, reduces humidity, improves indoor comfort and saves energy. Color is white and is easily applied by brush, trowel, palm, extrusion or spray equipment. #6 Mastic® low to high velocity air duct sealant is preferred by professional HVAC and home weatherization contractors nation wide.
RCD Corporation® Air Duct Sealant, Low to High Velocity, 1 gal, Pail, Viscous Liquid, Off-White, Pleasant, Composition: Ground Limestone, Hydrated Aluminum Silicate, Titanium Dioxide, 5 hr Dry Time, 7 - 8, >212 deg F Boiling, 32 deg F Melting Point, >325 deg F Flash, VOC: <50 g/L, 6238 cSt Kinematic, 68000 cPs Dynamic, 4 Inch-lb Tensile, -10 to 200 deg F Service, 45 - 90 deg F Storage