Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number EE5521PC22 found under Packing Preformed by Clow Corp. The National Stock Number assigned to this part is 5330008555074, 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 EE5521PC22.