CRC contact cleaners are fast-evaporating, residue-free solvents designed to remove dust, oil, and light contaminants from sensitive electronics. They are widely used to clean circuit boards, relays, and switches without degrading plastic components. The formulas are completely non-staining and non-corrosive.Popular CRC FormulationsCRC CO Contact Cleaner: A highly specialized, plastic-safe formulation that evaporates rapidly and minimizes equipment downtime. It is NSF K2 Registered and non-flammable in many of its variations.CRC QD Contact Cleaner: A quick-drying, zero-residue formula ideal for delicate electronics where lower flashpoint cleaners are acceptable.CRC Contact Cleaner Plus: Contains added lubricants to de-oxidize and protect metal contacts after cleaning.