Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number WPP1655 found under Ring Retaining by Siemens Water Technologies Corp. The National Stock Number assigned to this part is 5325003670471, and the Federal Supply Class is 5325 Fastening Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like WPP1655.