868-1000 - Solar Flux Type B Stainless Steel Backing Flux

Get Perfect Stainless Roots Without the Purge Gas

Every welder knows the headache of welding stainless steel pipe or tubing: the dreaded "sugaring" on the inside. If you don't protect the back of that weld, oxygen attacks the molten metal, leaving a crusty, porous mess that ruins the joint and fails inspection. The traditional fix is back purging—stuffing the pipe with dams, balloons, or tape and pumping in expensive Argon until the oxygen is gone. It takes time, it wastes gas, and it's a pain to set up. Enter Solar Flux Type B, the "can of insurance" that fits right in your toolbox.

Solar Flux Type B is the industry standard for getting X-ray quality welds without the hassle of back purging. It's incredibly simple to use: just take a small amount of the powder from the 1 lb can, mix it with some alcohol (methanol works best) until it looks like a thick paint, and brush it onto the back of your joint. Let it dry for a minute, and you are ready to weld. As you lay down your bead, the flux melts on the backside, forming a tough, airtight shield that keeps oxygen out completely. When you're done, the flux chips off easily, leaving a smooth, clean, shiny root pass that looks like it was purged with the purest gas.

This product is a massive money-saver for job shops and field welders. Imagine not having to drag extra cylinders of argon to a job site or trying to figure out how to purge a weirdly shaped manifold. With Solar Flux, you can weld stainless steel headers, exhaust pipes, and sanitary tubing with confidence. It also helps pull heat out of the metal, reducing warpage on thinner sheets. Whether you are TIG welding intricate aircraft parts or MIG welding heavy industrial flanges, Solar Flux Type B ensures your backside is covered, literally.