Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 48 000 21609 found under Seal Nonmetallic Strip by Sargent Fletcher Inc. The National Stock Number assigned to this part is 5330016676406, 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 48 000 21609.