This Gasket has sold me, I had a warped flange
with a blown gasket between, I ended up cleaning & sanding both flange areas
& used a standard gasket which still leaked. Cost me about $6.00
more than a standard gasket but well worth it, No more leaks.From now on this is the gasket of my choice, whether the flange is warped or not. It's for sure a better seal.