8" Inflatable Bag for Welding Purge

8" Inflatable Weld Purge Bag Consisting of two shielded bags connected by an inert gas purge tube. The gas purges both air and unwanted gases and vapors, expelling them out of the space between the bags and introducing the gas through a single valve. Quick and easy to install, reduces the volume of inert gas to be used, for all grades of stainless and duplex steel, polished interiors, exotic metals and alloys.