Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 0831172 found under Filter Condenser Ai by Thermo Neslab Inc. The National Stock Number assigned to this part is 4130015256215, and the Federal Supply Class is 4130 Refrigeration And Air Conditioning Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 0831172.