The government is seeking sources capable of manufacturing NSN 1660-01-652-7884, Mask, Oxygen, currently made by Avox Systems, Inc. Potential sources must provide all labor, materials, and facilities for new manufacture, including component procurement, inspection, testing, and shipping. The estimated annual quantity is 80 each, and responses to this sources sought notice are due by May 26, 2026, at 2:00 PM Eastern Time. No budget amount or performance location is specified. This notice is for market research to identify vendors for future procurement, not a current solicitation.