I try to reformulate Steven’s question.

Can anyone give us an example of an ASME B16.5 flange, size & rating, that exhibits "the failure" for seating stress when analyzed using either ASME VIII Div 1 App. 2 or ASME VIII div 2 section 4.16 (2007)?

Before to send it, please quick check that the total flange moment is based on the flange design bolt which is opposed only by the gasket load, or alternatively, please send some details on the gasket load that has been considered in the calculation.

Thank you.