Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number U53220 found under Vacuum Pump Unit Reciprocating by Triumph Thermal Systems Inc. The National Stock Number assigned to this part is 4310000910202, and the Federal Supply Class is 4310 Compressors And Vacuum Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like U53220.