Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 54-51-1591 found under Seal Nonmetallic Special Shaped by Globe Rubber Works Inc. The National Stock Number assigned to this part is 5330006182756, 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 54-51-1591.