Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S11052-0025Q found under Ring Set Piston by Trelleborg Sealing Solutions Us Inc. The National Stock Number assigned to this part is 2805000018927, 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 S11052-0025Q.