Flux That Stays Where You Put It

Ruby Fluid Soldering Flux Paste is a general-purpose paste flux designed for controlled application on copper, brass, tin, and ferrous metals. Unlike liquid flux, the paste consistency stays where it is applied, helping keep flux and solder flow concentrated around the desired joint area.

• Paste consistency stays where applied
• Helps control flux and solder flow around the joint
• Ruby-red color provides easy application visibility
• Recommended for copper, copper foil, brass, tin and ferrous metals
• Compatible with tin-lead, tin-silver and other tin alloys
• Recommended working temperature: 200–600°F
• General-purpose flux for roofing, sheet metal, plumbing and other soldering applications
• Petroleum-based paste formula