Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S637480 found under Seal Plain Encased by Westinghouse Electric Corp. The National Stock Number assigned to this part is 5330001782283, 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 S637480.