Product review (4 stars): The gasket works fine but installing it was a bear
The gasket works fine but installing it was a bear.  THANK YOU to the DIY videos on Youtube.  All of them were honest that putting the second clamping ring back on is unbelievably difficult without the spring expansion tool and it is impossible to do with just one person.  DIY to save money vs. paying another $70 for the tool.  Without it, it took us over an hour; and one of us (not me) is fortunately exceptionally strong and we still almost gave up. Our gasket was pierced when somone (again, not me) forgot to take a Cotter pin out of his shorts before washing, so the gasket did not fail on its own originally.