The U.S. Navy intends to award a sole-source contract to The Boeing Company for one unit of a retainer seal (NSN 1R-1680-LLF02N687-P8) for the P-8 aircraft, as Boeing is the original equipment manufacturer and the only known source with the necessary data. The contract duration is one year, with delivery required FOB origin. No budget amount is specified. The performance location is not explicitly stated, but the solicitation is managed by NAVSUP WSS in Philadelphia. Interested parties must submit a Source Approval Request if not already approved, and proposals will be considered if received within 45 days of this notice.