Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 6CY 9 found under Seal Plain by Winsmith Div Umc Industries Inc. The National Stock Number assigned to this part is 5330011168019, 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 6CY 9.