Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 16400561 PIECE 24 found under Seal Retainer by Coltec Industries Inc. The National Stock Number assigned to this part is 5330010991464, 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 16400561 PIECE 24.