Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number WPP1681 found under Guard Mechanical Dr by Siemens Water Technologies Corp. The National Stock Number assigned to this part is 3020005362961, and the Federal Supply Class is 3020 Gear Pulley Sprocket And Transmission Chain. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like WPP1681.