Supco HS30004 Solderlene Paste Flux

For field technicians handling critical installations, the Supco HS30004 Solderlene offers a reliable, non-acid soldering flux solution designed to streamline the pipe-joining process. This petroleum-based paste flux is specifically engineered with industrial-strength wetting agents that effectively lower surface tension, allowing for superior solder flow in tight clearances. As a low-temperature flux, it is optimized for high-performance use with lead-free solder and mid-range soft solders, ensuring clean, robust joints across various refrigeration and HVAC applications. The formula is non-corrosive and self-cleaning, chemically removing surface oxides on contact to prevent oxidation during the heating cycle. Designed for year-round consistency, this 4 oz. jar includes a brush-top applicator for precise placement, maintaining its texture in both extreme heat and cold. It is compatible with all common metals, including copper and brass, though it should not be applied to aluminum or magnesium components.

Key Benefits

• Enhanced Solder Flow: Advanced wetting agents ensure deep penetration into the joint for leak-free performance.
• Non-Acid Formula: Safe petroleum-based chemistry prevents the long-term corrosion and pitting common with acidic alternatives.
• Broad Compatibility: Effective with low and mid-temp soft solders on copper, brass, and steel (excluding aluminum/magnesium).
• Self-Cleaning Action: Actively removes surface oxides during the soldering process to ensure a professional bond.
• Jobsite Ready: Features a 4 oz. brush-top container for easy application and remains workable even in cold climates.

Common Questions

Can this be used for brazing high-pressure lines?
No, this is a low-temperature paste flux designed for soft soldering and sweat fitting applications. For high-temperature brazing or silver soldering in high-pressure refrigeration lines, a dedicated brazing flux is required.

Is this flux safe for potable water systems?
The Supco Solderlene formula is non-acidic and compatible with lead-free solder, making it a standard choice for HVAC tubing and general plumbing, provided the system is flushed according to local codes after installation.

Will it ruin aluminum coils?
Yes, this specific chemistry is not intended for aluminum or magnesium. Contact with these metals can cause improper bonding or material degradation; always verify the base metal before application.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.