The Department of Defense, specifically the United States Air Force, is seeking proposals for the Small Business Innovation Research (SBIR) program focused on developing advanced fiber/filament materials and rope seals capable of withstanding extreme combustion environments exceeding 3000°F. The objective is to create a fiber/filament that can endure prolonged exposure to high-temperature, oxidizing conditions for at least one hour, while also being suitable for fabrication into rope seals used in hypersonic flight and propulsion systems. These seals are critical for maintaining the integrity of high-performance aerospace systems, as current materials do not meet the necessary temperature thresholds. Proposals are due by June 25, 2025, and interested parties can find more information and submit their applications through the official SBIR website at https://www.sbir.gov/topics/12037.