Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 8040-HSM-SWC1 found under Filter Element Reverse Osmosis by Hydranautics. The National Stock Number assigned to this part is 4610012534294, 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 8040-HSM-SWC1.