Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SM 160 180-28 found under Packing Material by Bauer Nilsen A S. The National Stock Number assigned to this part is 5330251502487, 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 SM 160 180-28.