Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CSD28B found under Gasket by Kontro Co Inc The. The National Stock Number assigned to this part is 5330013537360, 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 CSD28B.