RUKO LOS-HM-40.0mm Rosin-Based Soldering Flux Paste, 20 g Tin

RUKO GMBH LOS-HM-40.0mm is a rosin-based soldering flux paste engineered for reliable joints on copper, brass, and tin-plated surfaces. Unlike liquid fluxes that can run off the joint, this paste stays in place, making it ideal for precise work in electronics, electrical engineering, and fine mechanics.

Highlights

• Rosin-based flux classification F-SW 32 (DIN EN 29454-1, 1.1.2.C)
• Non-corrosive, non-conductive residue; no-clean for most applications
• Low halide content
• Supplied in a 20 g tin with 40 mm diameter

In daily use

Apply a small amount to the joint before soldering. The flux activates between 250 °C and 350 °C, promoting solder flow and wetting. After soldering, the residue is non-corrosive and non-conductive, so cleaning is usually unnecessary, saving time in production or repair.

Full specifications

• Flux type: Rosin-based (Kolophonium)
• Flux classification: F-SW 32 (DIN EN 29454-1, 1.1.2.C)
• Application area: Electronics, electrical engineering, fine mechanics
• Compatible metals: Copper, brass, tin-plated surfaces
• Residue characteristics: Non-corrosive, non-conductive, usually no-clean
• Form: Paste / Grease
• Container type: Tin
• Net content: 20 g
• Container diameter: 40 mm
• Recommended soldering temperature: 250-350 °C
• Shelf life: 24 months
• Storage conditions: Cool and dry
• RoHS compliance: Yes
• Halide content: Low
• Cleaning required: No (for most applications)

Final note

A dependable flux paste for professionals who need consistent results on common electronic metals.