CRC HF Contact Cleaner helps effectively remove and eliminates dust, light oil, grease, and dirt from contacts, printed circuit boards, switches, PCs, motors, relays, generators, edge connectors, busbars, circuit breakers, plastics and insulators, electromechanical assemblies, and sensors. This aerosol spray cleaner is safe to use on most plastics and has a petroleum distillate-based formulation with a 204°F flashpoint.