The Department of Defense, through the Defense Logistics Agency (DLA Aviation), is seeking proposals for the procurement of valves and sleeves for the CH-53 helicopter, specifically under National Stock Number (NSN) 2915-008918871. This solicitation is for an Indefinite Quantity Contract with an estimated maximum order quantity of 168 units over a five-year period, emphasizing the critical safety and configuration control aspects of the items required. Interested vendors must submit their proposals in writing, with the solicitation set to be issued on July 15, 2025, and all offers must be submitted to the designated fax number. For further inquiries, potential offerors can contact Cindy Hunt at (804) 971-7217 or via email at cindy.hunt@dla.mil.