3M Electrical Tape 1157R Log Roll 3" Paper Core, 24 in x 72 yd

Features

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.

• Porous construction allows varnishes to penetrate thoroughly
• Compatible with “Scotchcast” Brand resins
• 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