The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking to procure 27 units of Ethylene Glycol, identified by NSN 7R-5999-016816774-P8 and reference number 708400-1. This procurement requires engineering source approval due to the flight-critical nature of the item, necessitating that all proposals include detailed documentation demonstrating compliance with the source approval requirements. The selected supplier must possess unique design capabilities and manufacturing knowledge, as the item is essential for maintaining quality standards, and only previously approved sources will be considered for this contract. Interested parties must submit their proposals, including necessary source approval documentation, within 45 days of this notice, and can contact Jessica L. Harpel at (215) 697-2995 or via email at JESSICA.HARPEL@NAVY.MIL for further information.