Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 54-749 found under Gasket Air Valve by Itw Industrial Finishing. The National Stock Number assigned to this part is 5330010721866, 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 54-749.