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Ultra Flux and Black Flux are water base pastes consisting of a unique combination of potassium salts of fluorine and boric acid. They are recommended for use with torch, induction, furnace, resistance, dip and other heating methods. Both can be used in the concentrated form or can be diluted. Heating the flux to 150°F-175°F dilutes it to a thin consistency without water. They also readily dilute to a thin consistency using 60cc of cold or hot water per pound of flux.

5 lbs. flux & 300 cc water = 1/3 quart
30 lbs. flux & 1800 cc water = 2 quarts
65 lbs. flux & 3900 cc water = 1 gallon

Water diluted flux retains good suspension without settling.

Ultra Flux and Black Flux can be applied using a brush, dip or spray. The wetting ability is excellent. Vertical adherence as applied and upon heating is excellent. There is no spatter on heating with concentrated flux, slight spatter will occur with water diluted flux due to escaping steam. They have excellent adhesion without cracking when applied to parts which are air dried or heat dried before brazing. It also has a long storage life without crystallizing or caking.

Protection of parts and flux life under heating are excellent. Oxide absorption and brazing alloy flow are also excellent on all metals when these fluxes are used. Flux residue removal is easy with hot water. This feature saves time and problems with corrosion later on.

For further information, visit our website at www.bellmanmelcor.com