Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RP19-N found under Filter Element Water Purification by Wtc Industries Inc. The National Stock Number assigned to this part is 4610014651341, and the Federal Supply Class is 4610 Water Purification Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like RP19-N.