Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2-133 N552-90 found under Packing Preformed by O Ring Division Europe. The National Stock Number assigned to this part is 5330011576354, 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 2-133 N552-90.