This Stay-Silv White Flux from Harris Products Group is a versatile paste flux designed for silver brazing applications across a variety of metals, including cast iron, copper, brass, bronze, and steel. With an active temperature range of 1050°F to 1600°F, it is formulated to provide smooth application and even coverage, ensuring excellent protection during the brazing process. Ideal for projects requiring normal heat, this flux is a reliable choice for both ferrous and non-ferrous metals, though it is not suitable for aluminum, magnesium, or titanium. Packaged in a convenient 1 lb. jar, it boasts a shelf life of two years, making it a practical addition to any welding toolkit.