3M Electrical Markets Division Seal Mastic Tape Compound 2229, 1 in x 10 ft, Black, Used for Electrical Insulating, Padding and Sealing in adverse conditions, 1 roll: Adhesive Tapes: Amazon.com: Industrial & Scientific
Scotch® Rubber Mastic Tape 2228 | 3M United States
Mastic Tape, 60 mil, 2" x 6 ft., Black - Walmart.com
Scotch 2228 Mastic 1-in x 10-ft Rubber Electrical Tape Black in the Electrical Tape department at Lowes.com