That is sexy !
A couple years back I got to work on generators in a part of the world where parts took months to get there , and the oil pump and fuel pump " gaskets " would shrink to the point of not sealing anymore.
I would fill the grooves with ultra copper , let it set and re-install the old "O" rings ......worked every time.
I can't see gaskets going the way of the stone hammer , but this is a huge improvement I.M.O.