Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KT203305-1 found under Parts Kit Seal Repl by Standard Mfg Co Inc. The National Stock Number assigned to this part is 5330013877689, 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 KT203305-1.