MIL-PRF-2863C, PERFORMANCE SPECIFICATION: PACKING, PREFORMED, CONDENSER TUBE, NON-ASBESTOS (04 FEB 2000) [SUPERSEDES MIL-P-2863B]

MIL-PRF-2863C, PERFORMANCE SPECIFICATION: PACKING, PREFORMED, CONDENSER TUBE, NON-ASBESTOS (04 FEB 2000) [SUPERSEDES MIL-P-2863B]., This specification establishes the requirements for preformed packing assemblies for sealing to tube-to-tubesheet joints in main and air-ejector type steam condensers. Packing grades are as follows, and as specified (see 6.2): Grade A - Seawater-cooled main-condenser type applications. Grade B - Freshwater-cooled air-ejector-condenser type applications.