Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SK-0038 POS. 44 found under Seal Plain by Ships Machinery International Inc. The National Stock Number assigned to this part is 5330013380250, 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 SK-0038 POS. 44.