Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CR 12590 found under Seal Plain Encased by Edgewater Machine And Fabricators. The National Stock Number assigned to this part is 5330014324329, 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 CR 12590.