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RCD Corporation #6 Mastic is a water-borne, low VOC, fiber reinforced, non-flammable, non-toxic, low to high-velocity air duct sealant used to fabricate and repair thermal insulation and all duct types including UL listed air ducts. It seals the seams of crawl space vapor retarder and house wrap; seals the 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. Easy application by brush, trowel, palm, spray, or extrusion. Earns LEED credits. The color is Cream White. Store at temperatures between 45 F and 90 F. Apply at temperatures between 35 F and 120 F. Comes in either 1 or 2 gallon pail. SDS
These noncombustible caulks are used for fire blocking applications around pipes, ducts, vents, electrical wiring, utility lines and other penetrations to the building structure. These caulks are ASTM-136 specification approved. 12 tubes per case. SDS
A mildew resistant, paintable, air seal and weatherization sealant formulated to provide long lasting, flexible, weatherproof seals between most common building materials including wood, masonry, concrete, brick, drywall, metal and glass. Its smooth, creamy consistency makes it easy to tool and it cures to a tough flexible seal. Can be used for both interior and exterior applications.