Minimum Gasket Seating Stress (Sgmin-S)

Missing the Minimum Gasket Seating Stress (Sgmin-S)? No problem!

It’s true that not all gasket manufacturers provide each of the gasket variables needed to perform the ASME PCC-1 Appendix O checks. Here’s a trick I like to use if I don’t have the Minimum Gasket Seating Stress (Sgmin-S). I use a simple substitution, cancel out a few terms, and then I start printing money. Lots of it. 

And now you can too!

I like the Target Assembly Gasket Stress (Sgt) to govern the Selected Assembly Bolt Stress (Sbsel). In this case you may not need the Minimum Gasket Seating Stress (Sgmin-S). This is because it is assumed that the Target Assembly Gasket Stress (Sgt) is greater than the Minimum Gasket Seating Stress (Sgmin-S). Without the bolts or flange to govern the Target Assembly Gasket Stress (Sgt), there is no way for the Minimum Gasket Seating Stress (Sgmin-S) to fail the ASME PCC-1 Appendix O check.