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Eco Smart® Boric Acid-Free Black Paste Brazing Flux


Eco Smart® boric acid-free black paste brazing flux 60lb pail


Eco Smart® boric acid-free brazing black paste flux is used for brazing steel, stainless steel, carbide, Monel®, nickel, copper, brass, bronze and other ferrous and non-ferrous metals and alloys. Use with Stay-Silv®, Safety-Silv® and other brazing filler metals. This high heat flux is designed to extend the temperature and life of the flux. This is helpful during longer part heating cycles, or in cases of intense localized heating, such as induction brazing. Extremely fluid. Will penetrate the tightest joints. Not subject to recrystallization (lumpiness-hardening). May be water thinned. Conforms to the EU Reach & RoHS directive.


  • Black paste flux
  • Environmentally-friendly boric acid and borax free
  • Smooth consistency for easy application
  • Dissolves surface oxides and protects against oxidation during heating
  • Wide activation range
  • Excellent flux coverage during heating
  • Easy flux residue removal
  • RoHS compliant
  • Color change technology allows it to change colors when ready to use


Warning -

Cancer and Reproductive Harm -

Warranty Information

  • 1 Year

What's Included

  • Eco Smart® Flux 60lb pail



Alloy Type Flux
Diameter N/A
Material Flux
NSF Compliant No
RoHS Compliant Yes


Warranty 1 Year