Compressed Air Piping Union Fitting #M8023 This listing is for a brand new MaxLINE 1" piping union fitting (part number M8023). This MaxLINE union is specifically designed for the MaxLINE 1" tubing made by RAPIDAIR and is great for adding extra tubing or connecting two pieces where you don't have a need for an outlet. This fitting is made of solid brass and has a double o-ring seal for a no-leak connection. Also is has split ring connections for easy disassembly if needed. Rated for 175 PSI working pressure. If you need any other fittings or tubing for your MaxLINE system or any other parts see our (MaxLINE Air Tubing) eBay store category or see our other items. Specifications: Part Number: M8023 Solid Brass Nickel-Plated for Corrosion Resistance Double O-Ring Seal This listing is for one (1) M8023 1" piping union.