Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PX002700AV found under Expander Oil Ring by Campbell Hausfeld Co. The National Stock Number assigned to this part is 4310012317097, 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 PX002700AV.