This procurement is for a C/KC-135 aircraft fairing (vapor barrier seal), NSN 1560-001720485, under a 100% small-business set-aside using NAICS 336413 and an indefinite-quantity contract. The ordering period is 60 months/5 years with no extension option, and estimated annual quantity is 20 each for the five-year base period with no option periods. Required delivery is 365 days production; export control, configuration control, and critical application item requirements apply, while first article and production lot testing do not. FOB is Destination with inspection/acceptance at Origin, and the solicitation issue date is on or about January 4, 2027. Award may be based on price, past performance, and other evaluation factors, with PPIRS used for past-performance evaluation.