Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number F-99328A REV B PIECE 09 found under Seal Assembly by Ina Bearing Co Inc. The National Stock Number assigned to this part is 5330012100530, 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 F-99328A REV B PIECE 09.