Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 29A-2643 found under Ring Carbon Steam T by Dresser Rand Co. The National Stock Number assigned to this part is 2825011993122, 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 29A-2643.