Polyken FoilMastic Butyl Seal & Repair Tape (360-17): 3 in. x 100 ft. (Silver)

Polyken FoilMastic Butyl Seal & Repair Tape is a printed, 2 mil dead-soft aluminum foil backing with a 15 mil butyl rubber mastic adhesive. It is a waterproofing repair tape used for indoor or outdoor sealing of low, medium & high-pressure HVAC duct systems (includes: metal duct, fiberglass duct and flexible duct systems). It seals cracks and seams in gutters, roof alleys, eaves, hips and ridges and seals around chimneys and vent stacks. You can use Polyken 360-17 to repair gouges, rips, tears in metal panels of trailers, shipping containers and metal buildings. Also used to seal leaks in vans, cars, and trucks and for mobile home repair. Use duct mastic to mend poorly sealed connections, improve indoor air quality (since fewer pollutants circulating), lower utility bills, and burn fewer fossil fuels. SMACNA A, B, and C Seal Classes. UL 723 classified. Low VOC content and can contribute toward satisfying EQ Credit 4.1 (Low Emitting Materials) under LEED®.

Please note that Nashua 360-17 and Polyken 360-17 are the same product manufactured by Berry Plastics. Therefore the tape roll core may be branded with Nashua or Polyken, depending on current inventory. Country of Origin: United States.