Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MS28782 And 22 found under Retainer Packing by S C Hydraulic Engineering Corp. The National Stock Number assigned to this part is 5330001716757, 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 MS28782 And 22.