J.V. Converting JV497/BLK360 JVCC JV497 Black Masking Tape: 3" x 60 yd, black Carrier/backing: saturated crepe paper Adhesive: synthetic rubber resin Thickness: 5.7 mils (carrier, adhesive). elongation: 7 percent Adhesion: 32 ounces per inch (to stainless steel test panel). tensile strength: 19 pounds per inch (longitudinal) Service/operating temperature: 60F to 150F