Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SC000028 ITEM 7 found under Gasket by Cooper Valve Co. The National Stock Number assigned to this part is 5330011993365, 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 SC000028 ITEM 7.