Hmmm. You could contact the manufacturer on getting a replacement. I would think using silicone to seal it would work though... I'd be worried about getting water in there and frying my tank though.
The extra bubble in the chamber clued me in. It is made of silicone but is removable to clean the skimmer. I do have a text into them hopefully I will hear soon. Thanks for the response. I'll let you know what they say just for fun.