LA-CO Regular Flux is an all-weather, water soluble flux which is the ultimate flux for all copper soldering.
This flux paste won’t leave residue in water piping and contains no zinc chloride to reduce corrosion concerns. It cleans the pipe upon application, allowing solder to run more smoothly around the pipe.
Non-acid, non-toxic, and lead-free so safer to use.
Made in U.S.A. to meet top industrial standards.