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Durable and powerful general purpose flux that protects your parts up to 1600°F / 870°C. It is an active fluoride-type flux which is appropriate for all nonferrous metals and begins to melt and dissolve oxides at 600°F / 320°C. Paste formula can be cleaned up with hot water.
If you are using one of our paste solders, you do not need this flux. Paste solder has the flux already mixed in. You'll need flux when you solder using chip or wire solder. Handy-Flux can be used on gold, silver, brass, and copper, however most jewelers prefer this type for silver.