3M 56 Polyester Electrical Tape 3M 56 Tape is a 1-mil polyester film with thermosetting rubber adhesive. 3M 56 Tape is especially suited for use use as layer insulation and coil cover in 130°C Applications. Other widths prices pro rata. Other widths available, ring for prices. For full specifications click... Available in: Option Title Option Price 50mm x 66m From $38.00 USD 38mm x 66m From $29.00 USD 25mm x 66m From $19.00 USD 19mm x 66m From $15.00 USD 12mm x 66m From $10.00 USD 6mm x 66m From $5.00 USD