JVCC AF20 Aluminum Foil Tape (2 mil Linered): 2 in. x 50 yds. (Silver) Carrier/backing: aluminum foil. Adhesive: solvent-based acrylic Thickness: 3.6 mils (carrier, adhesive) 1.6 mils (adhesive) 2 mils (carrier). elongation: 3.5 percent Adhesion: 73 ounces per inch (to stainless steel test panel) Tensile strength: 17.1 pounds per inch (longitudinal) Service/operating temperature: -22F to 248F