WD-40 CONTACT CLEANER 390CCS

WD‑40 Contact Cleaner 390CCS is designed to clean, protect, and improve the performance of electrical contacts, connectors, mechanical parts, and small metal components. When sprayed, it helps remove dust, oxidation, old grease, and residue — restoring proper conductivity and contact performance. It also leaves a thin lubricating layer that reduces friction and guards against rust or corrosion, which extends the life of contacts and moving metal parts. Because it works on metal surfaces, it’s ideal for switches, plugs, hinges, connectors, and other items where a clean, low‑resistance connection or smooth mechanical movement is required.