The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking qualified sources for the procurement of a diplexer, identified by NSN 7R-5985-014373108-FW, with a quantity of three units required for delivery FOB origin. This procurement necessitates engineering source approval to ensure the quality of the part, as it is flight critical and requires that only previously approved sources be solicited; new sources must undergo a qualification process that may delay contract award. Interested parties must provide comprehensive documentation as outlined in the NAVSUP Source Approval Information Brochures, and offers lacking the necessary data will not be considered. For further inquiries, contact Caitlin C. Donahue at (215) 697-2198 or via email at CAITLIN.V.DONAHUE.CIV@US.NAVY.MIL.