Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SDC-137-008 found under Retainer Packing by Space Dynamics Corp. The National Stock Number assigned to this part is 5330011194165, and the Federal Supply Class is 5330 Packing And Gasket Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SDC-137-008.