Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 553 0380 61 found under Seal Nonmetallic Sp by Dassault Aviation. The National Stock Number assigned to this part is 5330144114192, 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 553 0380 61.