The 1635-20S is a G3 industrial Maintenance Cleaner for clean oil and contaminants off of metal parts, printed circuit boards, barcode instruments, switch boxes, gear boxes and engines. It is perfect for all types of degreasing, metal cleaning, relays, generators, edge connectors, buss bars, circuit breakers, contact cleaning and other maintenance cleaning. Contact cleaners are used in electrical maintenance and to repair faulty contacts by removing insulative contamination. Quickly blasts off oils, greases, silicones, dirt and grime. This patented cleaner is much safer than the three most common non-flammable industrial solvents such as TCE, nPB and Perc.