This is a sources sought notice for market research to identify potential sources for the new manufacture of a cylinder assembly (NSN 1680-00-895-1058RK, P/N 5-89525-6) for the KC-135 platform, with an estimated requirement of 34 units. The government is seeking capability information from all business types, including small businesses, and may consider breaking out the requirement by airframe. Performance would be at Tinker AFB, Oklahoma. No solicitation is currently available, and interested parties must indicate interest via the designated online button. The effort involves a new spares buy with no repair requirement.