Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HP1 030 3900 found under Membrane Osmosis Pu by Katadyn North America Inc. The National Stock Number assigned to this part is 5330013295354, and the Federal Supply Class is 5330 Packing And Gasket Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HP1 030 3900.