CRC contact cleaner 2000 precision cleaner. Contact Cleaner 2000 is an aggressive advanced COzol technology alternative precision cleaner designed to remove contaminants from electrical and electronic equipment. It provides an effective alternative to HCFC 141b-based cleaners when sensitive plastics are not a concern. It Evaporates quickly and leaves no residue, is non-flammable and contains no class I or class II ozone depleting chemicals. - Recommended for the effective cleaning of light oils, dirt, dust, fingerprints, flux or polar soils from contacts, metal switches, motors, relays, generators, edge connectors, buss bars, circuit breakers, scales and sensors. Not recommended for use on noryl or polycarbonate type plastics such as Lexan. Test on plastic substrates before using.