NIGP 89050: Rings and Seals, Carbon (for Turbine Shafts)

NIGP 89050 Rings and Seals, Carbon (For Turbine Shafts) is an Item code under which state and local governments procure replacement mechanical components and assemblies for water treatment infrastructure, specifically drive shafts and related bearing systems for softener equipment. The scope encompasses sole source procurements of specialized rotating equipment when original manufacturers are the exclusive source, bundled with turnkey installation, site mobilization, and startup services. Issuing bodies under this code include municipal water utilities and public works departments managing treatment plant operations and capital replacement cycles.

The recent activity is concentrated in Florida, with the City of Holly Hill posting a sole source procurement (SS202001) on October 19, 2026, for a replacement WesTech DS43 Dual Shaft Drive unit for softener #2 at its Water Treatment Plant, carrying a total value of $113,067.00 ($79,159.00 for equipment and $33,908.00 for installation). The procurement resolved by September 22, 2020, through the City Commission's adoption of a sole source purchasing resolution that included the required electronic advertisement and alternative-source search procedures. The drive shaft replacement included comprehensive installation services—site mobilization, equipment removal, precision leveling, and startup—with the manufacturer providing a five-year warranty and net 30 payment terms.