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In 2010 Superior Flux purchased Ruby Chemical, makers of RubyFluid Liquid Flux and RubyFluid Paste Flux. Since 1907 RubyFluid has been a staple soldering flux for workers, craftsmen and artisans in the applications of stained glass, plumbing, and roofing, to name just a few.
RubyFluid Flux can be purchased through McMaster-Carr (www.mcmaster.com) and numerous stained glass distributors. Scroll down for McMaster-Carr part numbers and links. We also welcome direct sales.
| Superior Flux Number |
Description | Rec. Base Metals |
Rec. Solders |
Rec. Temp Ranges | MSDS | Spec. Sheet |
| RubyFluid Liquid Flux | Liquid Inorganic Acid | Copper, brass, tin, ferrous metals | Tin/lead, tin/silver, other tin alloys | 95-315°C 200-600°F |
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| RubyFluid Paste Flux | Petroleum Paste - Red | Copper, brass, tin, ferrous metals | Tin/lead, tin/silver, other tin alloys | 95-315°C 200-600°F |
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| RubyFluid Stainless Steel Flux | Liquid Inorganic Acid | Stainless Steel, ferrous metals, copper, brass, tin | Tin/lead, tin/silver, other tin alloys | 95-345°C 200-650°F |
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All Ruby fluxes are RoHS compliant.
McMaster-Carr Part Numbers for Ruby Liquid Flux
| Packaging Size | Description | McMaster-Carr Part No. |
| 1-Pint | RubyFluid Flux | 7699A1 |
| 1-Quart | RubyFluid Flux | 7699A2 |
| 1-Gallon | RubyFluid Flux | 7699A3 |
RubyFluid Liquid Flux is a versatile general purpose soldering flux that is used in numerous applications, including stained glass, plumbing, roofing, electrical and many others. This inorganic acid flux causes solder to flow in a thin film, thus saving solder. RubyFluid flux adheres quickly when applied and stays put where applied.
RubyFluid Paste Flux is a petroleum-based general purpose soldering flux with the trademark ruby-red color, a feature that makes the flux visible when applied. RubyFluid Paste Flux promotes effective solder joints and as a paste form, it helps restrict flux and solder flow to a desired joint area.
RubyFluid Stainless Steel Flux is specifically formulated for soldering stainless steel. This flux contains Zinc Chloride and Hydrochloric Acid and is active at room temperature. RubyFluid Stainless Steel Flux exerts the strong oxide-removing activity necessary to successfully solder stainless steel.