360-45 - Foilastic Sealant Tape Item Code: Type: Sold By Quantity Tapes HVAC Foil Tape Patch Tape Description A 45 mil Foilastic sealant tape with a blue polyethylene liner, 2 mil dead soft aluminum foil backing and a Butyl Rubber adhesive which contains no asphalt. Acceptable for use on galvanized materials; heavy duty all weather tape; provides instant water tight bond; will not crack or soften in varying temperatures (below 0° F to +300° F); non-staining adhesive; paintable; excellent resistance to cold, water and sunlight; used to seal cracks and seams in gutters, roof valleys, eaves, hips and ridges; used to repair gouges, rips, tears in metal panels of trailers, shipping containers and metal buildings; used in mobile home repair; used in duct joint sealing for low, medium, and high pressure HVAC systems.