Red Liquid Electrical Tape Email Red liquid tape flows easily over connections and cures to an elastic environmentally protective coating to protect and insulate electrical circuits. Part #: WA-331 Quantity Price ea. 1 + $14.26 14.26 Back to: Electrical Tapes & Dielectric Grease Ask a question about this product Black Liquid Electrical Tape 3M Scotch Rubber Tape Description Liquid Electrical Tape - Red - 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. Available in red or black.