Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 25-7800-03402 found under Seal Ring Assembly by Cincinnati Gear Co The. The National Stock Number assigned to this part is 2825012880777, and the Federal Supply Class is 2825 Steam Turbines And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 25-7800-03402.