Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 9861-011X40PC16 found under Seal Plain Encased by Electric Boat Corporation. The National Stock Number assigned to this part is 5330007528383, 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 9861-011X40PC16.