#6 Mastic RCD 1 Gallon


#6 Mastic® Low to High Velocity Air Duct Sealant   


RCD Corporation #6 Mastic® seals all air duct types including UL listed air ducts, thermal insulation and crawl space vapor retarders. Easily applied by brush, trowel, palm, spray or extrusion. Color is Cream White.  Store at temperatures between 45°F and 90°F.  Apply at temperatures between 35°F and 120°F.

  • Weather Resistant • Water Borne
  • Low Odor • Non-Flammable
  • Earns LEED Credits • UL Listed
  • Fiber Reinforced • Contains Ceramic Microspheres


1 gallon pail