801B electrical contact cleaner spray cleans, lubricates and protects contacts. It contains a slow drying, plastics-safe solvent that removes stubborn residues. The PPE enhances conductivity and provides long term protection from oxidation. It also bonds to the surface of metals and is particularly effective on gold, protecting gold contacts for life.This PCB contact cleaner reduces contact scrubbing, connection wear, and abrasion failure. It also protects and lubricates connectors, jacks, relays, contacts, switches, plugs, batteries, controls, potentiometers, and more.