NSN:1680-01-165-0264RK NOUN:CYLINDER ASSEMBLY,R

The U.S. Department of Defense, through the Ok DLA Aviation office at Tinker Air Force Base, Oklahoma, is soliciting a Firm Fixed Price contract for the procurement of four Cylinder Assembly units identified by NSN 1680-01-165-0264RK and part number L5338668-031. This component is a Critical Safety Item (CSI) used specifically for the inflation and deflation of crew entry door seals on B-1B aircraft, constructed from aluminum alloy with exact dimensions of 6.7500 X 2.000 X 3.2500 X 1.1200 inches. The delivery of all units is mandated to be completed on or before March 1, 2027, destined for the Air Force. Item Unique Identification (IUID) is required for each unit, and Export Control regulations apply. The solicitation, issued under authority of 10 U.S.C. 2304(c)(1) and FAR 6.302, reflects a sole-source justification due to the exclusive availability of this specific assembly from limited responsible sources. The contract opportunity is open to all responsible sources, with proposals required to be submitted electronically via SAM.gov by the deadline of July 5, 2026. All communications, including questions, must be submitted in writing or via fax directly to Patrick McGowan at patrick.mcgowan@us.af.mil; telephone inquiries are prohibited. An Ombudsman has been appointed to maintain confidentiality while addressing concerns from offerors during the proposal phase, accessible at (405) 734-8241. No unit pricing or total contract value is disclosed, but a quantity range of 1 to 6 units is permitted under the option structure.