The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of a tube assembly for oxygen, identified by NSN 1R-9999-LLICRA202-QF and reference number 74A850678-1001, with a quantity of one unit required for delivery FOB origin. This procurement necessitates engineering source approval due to the flight-critical nature of the item, which mandates that only approved sources may submit proposals, as they possess the unique design capability and technical data essential for maintaining the quality of the part. Interested parties must ensure compliance with the source approval requirements outlined in the NAVSUP WSS Source Approval Information Brochures and submit all necessary documentation with their proposals, as offers lacking required data will not be considered. For further inquiries, interested vendors can contact Helen I. Carmelo at (215) 697-1138 or via email at HELEN.I.CARMELO.CIV@US.NAVY.MIL.