Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PK-0323 found under Seal Plain by Nash Engineering Company Inc The. The National Stock Number assigned to this part is 5330011901825, 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 PK-0323.