Black Liquid Electrical Tape Email $14.26 Part #: WA-330 Black liquid tape flows easily over connections and cures to an elastic environmentally protective coating to protect and insulate electrical circuits. Back to: Electrical Tapes & Dielectric Grease Ask a question about this product Red Self-fusing Silicone 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.