Flux-Off lead-free 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. - Xtra cleaning strength. Fast drying. Leaves no residue. Test on plastics. All-Way Spray valve even sprays upside down. Non-corrosive, safe for metals. Flammable.