Originally Posted by Brother Matt
I often use wood stove gasket material for seals, although I'm not sure if it comes in much larger than 3/4" either. How about attaching a section of the seal to both sides, door and frame? That might give you the thickness you need.
I did think about that. I would have to put the lid on in the same spot every time if I did. Which really wouldn't be a big deal or any kinda of hassle. I just couldn't believe that 3/4 was still no thick enough.