I have an overflow drain, as seen in the picture provided, that isn't sealed. The common wisdom I've read online has been to seal with a gasket, but my drain doesn't seem to be anything like the ones I've seen.
I've also purchased a standard overflow gasket and it's a no go.
Does anyone have any idea how I can seal this drain?
This is the hardware that it's connected to and the gasket I bought thinking it might work.