3M Scotch Vinyl Mastic Roll Electrical Tape 2210, 4 inch x 10 feet, Black, Self-Fusing Rubber Tape for Insulating and Moisture Seal: Electronic Components: Amazon.com: Tools & Home Improvement
3M 2229 Mastic Tape Compound Designed For Quick And Easy Insulating, Padding And Sealing - AliExpress
3M™ Scotch-Seal™ Mastic Tape Compound 2229, 3-3/4 in x 10 ft, Black - The Binding Source
Mastic tape
3M Scotch-Seal Mastic Tape Compound 2229, 1-1/2 in x 30 ft, Black, 5rolls/Case 58596 - Strobels Supply
Mastic Tape, 60 mil, 2" x 6 ft., Black - Walmart.com