Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 7920023-1 found under Oxygen System Porta by Conax Technologies Llc. The National Stock Number assigned to this part is 1660011440724, and the Federal Supply Class is 1660 Aircraft Air Conditioning Heating And Pressurizing Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 7920023-1.