B-22 API S PECIFICATION 6A Metric Table 10.18—API Type BX Pressure Energized Ring Gaskets (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) Ring Number Number Size Outside Diameter of Ring OD Height of Ring H Width of Ring A Diameter of Flat ODT Width of Flat C Hole Size D Depth of Groove E Outside Diameter of Groove G Width of Groove N BX 150 ê43 ê72.19 ê9.30 ê9.30 ê70.87 ê7.98 1.59 ê5.56 ê73.48