Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AE-4498 FIG 468 found under Gasket by Btr Valve Sealants Inc. The National Stock Number assigned to this part is 5330006466771, 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 AE-4498 FIG 468.