Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BRB0001-561 found under Seal Nonmetallic Sp by The Boeing Company. The National Stock Number assigned to this part is 5330015346091, 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 BRB0001-561.