Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5W-57228-4 found under Gasket by New Philadelphia Fan Co Buffalo. The National Stock Number assigned to this part is 5330014290393, 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 5W-57228-4.