BP898 - No. 5 Soldering Flux Paste - 1 lb Tub

Professional Soldering Flux Paste

The Oakley Flux Paste No 5 is a versatile and reliable chemical agent designed for soft soldering applications. Packaged in a substantial 1 lb tub, this flux is ideal for professional plumbers, HVAC technicians, and metal fabricators who require a consistent and effective medium for joining metals. The paste is formulated to clean and flux the metal surface simultaneously, removing oxidation and preparing the joint for the introduction of solder. Its petrolatum-based consistency ensures that the flux stays in place, even on vertical piping or overhead installations, preventing waste and ensuring thorough coverage of the fitting.

This flux is highly effective on a variety of metals, including copper, brass, zinc, galvanized iron, and mild steel. By promoting strong wetting action, it allows the solder to flow smoothly into the joint through capillary action, creating a tight, leak-proof bond. The No 5 formula is designed to withstand the heat of soldering torches without carbonizing rapidly, giving the operator sufficient time to complete the connection. Whether used for potable water lines (check specific label certifications), heating systems, or general sheet metal work, this flux paste delivers the performance needed for high-quality craftsmanship.

Usage and Application

Application is straightforward: simply clean the pipe and fitting ends with an abrasive cloth, apply a thin, even layer of the Oakley Flux Paste No 5, and assemble the joint. The flux will activate upon heating, visibly changing character to indicate when the solder should be applied. Post-soldering, any remaining residue can be easily wiped away with a damp cloth, leaving a clean and professional finish. The 1 lb container provides an economical solution for workshops and job sites with high-volume requirements.