They don't claim to be innovative - They prove it! The Robvon Backing Ring Company has been an Industry leader in the research, development and manufacturing of Backing Rings, Consumable Inserts, Conspacers® & other related products since the company was founded in 1943. They are committed to the manufacture and distribution of the finest products on the market. Their commitment to customer satisfaction and high-quality products has made them the backbone of the Backing Ring industry. Robvon Backing Ring Company value and appreciate their reputation and they will do their utmost to maintain this honor. Backing Rings The Robvon Commercial Backing Rings are designed for quick, easy alignment of pipe, tube, fittings and valves and assure precise, close tolerance fit-up. They allow complete penetration and fusion of the weld and radiograph perfect certified welds Conspacer® The Robvon Conspacer®, which combines the Robvon Backing Ring and a Robvon Consumable Insert Ring, is suitable for use in high and low pressure piping in facilities where TIG welding is used to join pipe or tubing. Consumable Inserts The Robvon Consumable Insert Rings are for use in the welding of critical piping systems where internal obstructions cannot be tolerated or in welding of pipe, tube and other joining areas where uniformity and smooth root bead is required. Machined Rings The Robvon Machined Rings are for use in the welding of high/low pressure and, or high/low temperature piping systems where a close tolerance fit-up is required. Robvon Machined Rings can either be manufactured as a "Split" or "Solid" ring. Owing to the flexibility of a machined part, the Robvon Machined Ring can be produced from their "Standard" list or any possible configuration imaginable. Squings Robvon Squings are designed for quick, easy alignment of square or rectangular tubing and to assure a precise, close tolerance fit-up. They allow complete penetration and fusion of the weld.