3M 7100243697 | 60.149 yd x 1.417" Width x 7.1 mil Thickness Paper Tape. 3M high performance flatback tape 2519 is a high-performance general-purpose tape ideal for splicing liner boards and temporary floor protection as well as bundling and packaging applications that require adhesion to paper products. This thick, 7.1 mil tape features a strong kraft paper backing capable of resisting moisture and high temperatures and can be torn by hand for fast application.