Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C107263 found under Seal Plain Encased by Clevite An Imperial Clevite Co. The National Stock Number assigned to this part is 5330000729704, 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 C107263.