The NSN 1660003777054 (Ring Adapter Oxygen Mask) part number 289-661 manufactured by Avox Systems Inc is available in Jet Parts 360’s inventory. Owned and operated by ASAP Semiconductor, Jet Parts 360 has over six billion parts in its inventory, including NSN 1660003777054 . ASAP is devoted to streamlining the parts procurement process for our customers, making it easy for them to search through billions of parts to find exactly what they are looking for. We have dedicated account managers ready to solve procurement issues our clients face, whether it’s a need for aerospace parts, or an aircraft on ground situation. Submit a Quote for NSN 1660003777054 parts today to get started.