Permatex 85120 Liquid Electrical Tape, 4 oz , Black - by Permatex.

Weatherproof protectant for wiring and electrical connections

Goes on as a liquid and dries to a flexible vinyl polymer

Resists dirt, dust, chemicals, and moisture, ensuring that connections stay intact

Brush top applicator allows coverage without gaps

WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer.