[stugiv]

I just wanted to follow up for anyone in the future that finds this thread. I discovered that the gaskets have a T-slot so they're aren't held in by adhesive (at least not exclusively. I sent an email to Tiara support & received the following:

The gasket you are looking for is part number 5423310. This gasket is no longer available and there is no known replacement. I would suggest a large foam gasket company or changing the gasket out to something completely different than the current product.

In the meantime, I'm using some self adhesive stuff from Home Depot until I can find something better. I will try to remember to update this thread for reference.