Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number X1440T15A found under Seal Starter Body O by Dresser Rand Co. The National Stock Number assigned to this part is 2805009557640, and the Federal Supply Class is 2805 Gasoline Reciprocating Engines Except Aircraft And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like X1440T15A.