• This is a heavy-duty rubber tape that has so many uses you'll want to keep some close at hand. Nashua 360-45 Heavy Duty FoilMastic Butyl Rubber Tape is made from 2-mil dead-soft aluminum foil backing with 45-mil butyl rubber mastic adhesive.
• Nashua 360-45 foil butyl tape is a waterproofing repair tape that can be used to seal low, medium and high pressure indoor or outdoor HVAC duct systems. This includes flexible duct, fiberglass duct, and metal duct systems.
• FoilMastic butyl rubber tape is also recommended for repairing everything from trailer panels to shipping containers and more. It's effective as a heavy-duty rubber tape for air leaks on sprinkler systems. Using this rubber tape to fix ducts helps to reduce circulating pollutants and improve indoor air quality.
• Features and benefits include permanent sealant, provides an instant watertight bond, exceptional adhesion to most materials, conforms to various surfaces, heavy-duty all-weather foil coated butyl mastic, non-staining adhesive, 2-mil foil backing can be painted (use as a caulking alternative); resists cold, heat, sunlight and water, and more.
• Standards Met: UL723; LEED - contributes toward satisfying EQ Credit 4.1. Carrier/Backing: 2 mil aluminum foil - printed. Adhesive: butyl rubber. Release Liner: LDPE (low-density polyethylene) film. Thickness: 45 mils (carrier, adhesive) 43 mils (adhesive) 2 mils (carrier). Adhesion: 63 ounces per inch (to stainless steel test panel). Tensile Strength: 20 pounds per inch (longitudinal). Service/Operating Temperature: 40F to 300F. VOC content: < 1 g/L. Core: 3-inch diameter.