Natural rubber adhesive, vinyl/PVC film backing, 7000 V Dielectric, 20 lb/in breaking, 18 lb/in adhesion, 7 to 80 degree C. Resists water, CSA LR 31971, UL E-50292. For splicing of appliances wires, repairs in junction boxes, insulation of wires, electrical splicing and wrapping battery cables. 225 percent elongation. 18 mm W x 20 m L, 7 mil thick.