Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 80-4681 found under Seal Assembly Sproc by Skf Usa Inc. The National Stock Number assigned to this part is 2520007706703, and the Federal Supply Class is 2520 Vehicular Power Transmission Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 80-4681.