Flux-Off No Clean Plus flux remover is an extra strength solvent that removes heavy and encrusted flux deposits. This high pressure aerosol or bulk liquid penetrates quickly to remove all types of flux, oxide particles, dust, grease and oil, then evaporates quickly leaving no residues. - ITW Chemtronics Flux-Off no-clean plus flux remover for chip carriers, heat sinks, metal housings and chassis, printed circuit boards, relays and contacts, sockets, surface mount device pads, switches, plugs, solenoids.