Question about Edelbrock RPM Airgap - thermostat housing leak

What a stupid way to make that housing. Guaranteed to leak. Put something different on there. Anything but that.

Does seem weird that they would leave gaps in that raised ring. Anyway it’s back on there now, I’ll go ahead and try it for a while and keep an eye on it. First sign of a leak after this and I’ll order one with the o-ring. Or maybe I’ll just go ahead and order it so I have it on hand.