aluminum foil duct tape1.Material : aluminum foil 2.Thickness:18,20,25,30,40,45,50,75mic 3.Adhesive:solvent acrylic aluminum foil duct tapeCompounded Aluminum foil are composing by aluminum foil, fiberglass ... and sealed joints of heating duct systems, automobile, train compartment insulation, pipe insulation, and other vesselsSpecifications:1) Foil thickness: 18, 22, 25 ...