The 31W concentric reducer is available in sizes ranging from 1" OD to 8" OD and is made of T304 or T316L stainless steel. It features a mechanically polished surface with internal roughness of 20Ra (0.51μm) and external roughness of 32Ra (0.8μm). Gaskets are available in EPDM, Silicone, FPM, and PTFE. This reducer is ideal for use in sanitary piping systems.