The U.S. Coast Guard is seeking a firm fixed price purchase order for the installation of a Diamondback Shaft Seal, with all work to be completed by August 10, 2026. Services must be performed at the US Coast Guard Yard in Baltimore, MD. Quotes are due by June 19, 2026, and will be evaluated on a best value basis considering technical requirements, deadlines, and price. Payment will be made via government purchase order (Net 30) through the IPP invoicing system, with no down payments or advanced payments permitted. All responsible sources may submit a quotation for consideration.