The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking a sole source procurement for a rotary pump unit, identified by part number 4207-251004, with a quantity of one. This requirement is critical as the government lacks sufficient data to contract with any source other than the current supplier, emphasizing the specialized nature of the item. The pump unit is essential for operational capabilities and is subject to various trade agreements, necessitating government source approval prior to award. Interested vendors must contact Marisa Tetkowski at MARISA.TETKOWSKI@NAVY.MIL for further information and must adhere to the submission guidelines outlined in the NAVSUP WSS Source Approval Brochure to be considered for this opportunity.