Mannol 9893 Electrical Contact Cleaner 450ml is a high performance cleaning spray that efficiently removes oxidation, oil, grease, dust and moisture from electrical contacts and connectors. This fast drying formula restores conductivity, prevents current leaks and short circuits, and leaves no residue. Ideal for cleaning spark plug connections, wiring harnesses, relays, circuit breakers, starters, generators and printed circuit boards. The spray displaces moisture and forms a protective film that resists corrosion and enhances long term performance of electronic systems. Safe for use on plastic, rubber and metal surfaces. Suitable for automotive, industrial and household applications. Easy to use by spraying on the target surface, agitating if needed, wiping off residue, and allowing to dry before powering the system. Mannol 9893 helps maintain reliable electrical performance and prevents downtime.