Shurtape CT-109/CLR07572 CT-109 Cellulose Sealing Tape: 3/4" x 72 yd, Clear Core: 3 inch diameter Backing/carrier: hand-tearable cellulose film Adhesive: rubber-based Thickness: 1.7 mils (carrier, adhesive) Adhesion: 35 ounces per inch (to stainless steel test panel)