The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking small business concerns for the procurement of rotary pumps under the presolicitation titled "43--PUMP, ROTARY, IN REPAIR/MODIFICATION OF." The requirement involves the acquisition of three units of National Stock Number (NSN) 7H-4320-014864201, with delivery terms set to FOB Origin, and the government has determined that it is uneconomical to purchase the data or rights necessary for contracting repair from additional sources. These pumps are critical components in various defense applications, and the contract is 100% set aside for small businesses, with specific clauses addressing HUBZone, Service-Disabled Veteran-Owned, and Women-Owned Small Business concerns. Interested parties must respond within 45 days of the notice publication, and inquiries can be directed to Kaitlyn Mounts at (717) 605-5937 or via email at kaitlyn.t.mounts.civ@us.navy.mil.