Black Liquid Electrical Tape PDF Print Email Part #: WA-330 Black liquid tape flows easily over connections and cures to an elastic environmentally protective coating to protect and insulate electrical circuits. Quantity Price ea. 1 + $14.26 Back to: Electrical Tapes & Dielectric Grease Ask a question about this product 3M Scotch Super 88 Electrical Tape Red Liquid Electrical Tape Description Liquid Electrical Tape - Black - Liquid coating used to insulate and protect electrical connections. Waterproof coating will not unravel or deteriorate like tape. 4 oz. container includes brush-on applicator.