643821616 is listed in DICSA's technical catalogue under Interlock series fittings / 9000 PSI Flanges / 9000 PSI Straight flange (14,3).
Hose fittings and ferrules must be selected as an assembly system: match the hose construction, end connection and documented assembly specification.
Source specifications: Material: Mild Steel 1.0737 (or equivalent).
Use the catalogue drawing and exact part reference to check connection geometry, hose or tube compatibility, and installation requirements.
