Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 551863 found under Gasket by Lodestone Corp Div Of Fedders Corp. The National Stock Number assigned to this part is 5330000176138, 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 551863.