BONDERITE C-SO IND 79 AERO Metal pre-treatment safety solvent cleaner for mechanical parts. It dries quickly and is safe on all metals, rubber, plastics and good quality paints. BONDERITE® C-SO IND 79 AERO (TURCO IND79) is a colorless, clear, fast drying, metal pre-treatment safety solvent used as a cleaner for mechanical parts. It dries quickly and will not leave any residue. It is safe on all metals, rubber, plastics and good quality paints. It contains no chlorinated solvents, so it can also be used on titanium or titanium-alloy.