Groove designs presented herein are applicable for use with the following MS metal o-ring gaskets, or to dimensionally equivalent gaskets of other materials: AMS 5570 or AMS 5576 Plain AMS 5570 or AMS 5576 Silver P1. MS9141 - 0.035 tube x 0.006 wall MS9371 - 0.035 tube x 0.006 wall MS9142 - 0.062 tube x 0.006 wall MS9372 - 0.062 tube x 0.006 wall MS9202 - 0.062 tube x 0.010 wall MS9373 - 0.062 tube x 0.010 wall MS9203 - 0.094 tube x 0.006 wall MS9374 - 0.094 tube x 0.006 wall MS9204 - 0.094 tube x 0.010 wall MS9375 - 0.094 tube x 0.010 wall MS9205 - 0.125 tube x 0.010 wall MS9376 - 0.125 tube x 0.010 wall