The Department of Defense, through the Defense Logistics Agency (DLA Aviation), is seeking suppliers for the procurement of the Cylinder Assembly, R, specifically identified by NSN 1680-012011689. This opportunity involves an indefinite quantity contract (IQC) for a base period of five years, with an estimated annual requirement of 40 units, and delivery expected 250 days after receipt of order. The Cylinder Assembly is a critical component for the C/KC-135 aircraft, and contractors must be certified by the Department of Defense to access the necessary unclassified data. Interested parties can find the solicitation on the DLA Internet Bid Board System (DIBBS) around January 21, 2026, and should direct inquiries to Ryan Loeffelholz at ryan.loeffelholz@dla.mil or by phone at 804-279-1452.