The Department of Defense, through the Defense Logistics Agency, is conducting a Sources Sought Synopsis to identify potential sources for the procurement of hydraulic pumping units (NSN: 4320013721296KR) to support spares procurement for the Air Force. The objective is to gather market research on vendors capable of supplying the necessary labor, materials, and logistics, with a particular interest in engaging small and disadvantaged businesses. These hydraulic pumping units are critical for the operational readiness and maintenance of aircraft systems at Tinker Air Force Base. Interested vendors are encouraged to submit a Source Approval Request (SAR) package for qualification, and inquiries can be directed to 424 SCMS at 424SCMS.RFI.Responses@us.af.mil. Note that no solicitation is currently available, and no funds have been allocated for this research effort.