Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K055379 found under Ring Set Piston by Kaydon Ring And Seal Inc. The National Stock Number assigned to this part is 2815007164665, and the Federal Supply Class is 2815 Diesel Engines And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like K055379.