Sources Sought DEPT OF DEFENSE DEPT OF THE NAVY is seeking eligible contractors to manufacture a Heat Exchanger (NSN 7RH 1660 015997631, P/N 814209-3). The Government does not possess the necessary data for manufacturing the item. All responsible sources may express their interest and provide capability statements. This is not a request for competitive proposals, but all proposals received within 16 days may be considered. Source approval may be required.