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Stock up on welding, solder and brazing flux at Grainger, the supplier for people who get things done. Find lead-free water-soluble and petroleum-based welding fluxes, general-purpose silver brazing paste and specially formulated liquid flux. Choose the type of flux that can be used with the metal types you work with. Let Grainger help you get the job done right with welding, solder and brazing fluxes you can depend on!