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