Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number X3541-AP found under Packing Preformed by Acme Products And Engineering Inc. The National Stock Number assigned to this part is 5330009193418, 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 X3541-AP.