RUKO LOS-HM-29.0mm Soldering Flux Paste Stick

The RUKO GMBH LOS-HM-29.0mm is a highly active rosin-based soldering flux in stick form, offering a 29.0 mm diameter for direct application. Unlike liquid fluxes that require separate dispensing tools, this solid stick can be applied precisely to the joint area, making it suitable for general soldering tasks in electrical engineering, plumbing, and sheet metal work. Its formulation improves wetting and prevents oxidation during soldering, ensuring reliable joints on copper, brass, tin, and lead-free solders.

Highlights

• Diameter: 29.0 mm
• Flux type: Rosin-based, highly active
• Flux classification: 1.1.2.B (F-SW 26) per DIN EN 29454-1
• Halide content: Yes (halogenated)
• Residue characteristics: Corrosive, must be cleaned
• Operating temperature range: 200–400 °C (depending on solder)
• Melting point of flux: approx. 50–60 °C
• Lead-free compatible: Yes

In daily use

Apply the flux stick directly to the workpiece before soldering. The flux melts at low temperature, coating the surface and removing oxides. After soldering, clean the joint thoroughly to remove corrosive residues. Store in a cool, dry place away from direct sunlight.

Full specifications

• Product type: Soldering flux paste
• Form factor: Stick / Bar
• Diameter: 29.0 mm
• Flux type: Rosin-based, highly active
• Flux classification: 1.1.2.B (F-SW 26) per DIN EN 29454-1
• Application: General soldering, electrical engineering, plumbing, sheet metal work
• Compatibility: Copper, brass, tin, lead-free solder
• Residue characteristics: Corrosive, must be cleaned
• Halide content: Yes (halogenated)
• Operating temperature range: 200–400 °C (depending on solder)
• Melting point of flux: approx. 50–60 °C
• Packaging: Individual stick/bar
• Purpose: Improves wetting, prevents oxidation during soldering
• Lead-free compatible: Yes
• Storage conditions: Cool, dry place, away from direct sunlight

Final note

The RUKO GMBH LOS-HM-29.0mm provides a convenient solid flux option for demanding soldering applications where a highly active flux is required.