Pre-Formed Purge Dam Material Water Soluble Paper And Adhesive Coated Water Soluble Paper For Use With EZ Zone Tape Diameter 16 In. Features The Patented Ez Purge(R) Is A Preformed Self-Adhesive Water Soluble Purge Dam That Enables Welders To Save Time On Weld Preparation Save Gas And Improve Project Timeliness. Eliminate Measuring Cutting And Constructing. Simply Peel Insert And Press The D Application MIG/TIG Welding Purging Includes Water Soluble Tape Package Quantity 24