This is a market research notice for the production of a specific rotary hand pump used on C-5 and C-17 aircraft. The government intends to award a sole-source contract to the original equipment manufacturer, Lear Romec Division of Crane Co., as it is considered the only known source with the proprietary technical data and capabilities. The notice invites other interested parties to identify their interest and capability to meet the requirement. Responses must be submitted by email no later than 02 December 2025. This is not a formal solicitation and does not constitute a government commitment.