Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5500C1ABF23A found under Cylinder And Valve by A Vox Systems Inc. The National Stock Number assigned to this part is 1660011301949, 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 5500C1ABF23A.