3M™ Electrical Tape 1157R Log Roll 3" Paper Core, 24 in x 72 yd, 1 Roll/Case Matting 3M SKU: 7010354707

3M SKU: 7010354707

3M SKU: 7010532377

3M SKU: 7010508174

3M SKU: 7010494206

3M SKU: 7000045952

3M™ Electrical Tape 1157R Log Roll 3" Paper Core, 24 in x 72 yd, 1 Roll/Case Matting 3M SKU: 70103547073M SKU: 7000006149 Lead Time: ~24 days 3M Electrical Tape 1157R is a porous rayon mat tape with acrylic pressure sensitive adhesive that is specifically designed to allow thorough penetration of the impregnating resin inside bobbin wound coils. 100% Rayon fiber backing. Another advantage of 1157R tape is its ability, because of its porosity, to pick up resin and become thicker, making a hard moisture and mechanical barrier on the outside of the coil.