Do you need glue or a sealant? Check McMaster Carr. They have quite a bit of most everything. Use food grade sealant, or food grade glue to search. Sometimes you need to look for acknowledgement from the FDA in the search. I KNOW they have something, but it will be expensive. Maybe find it there and buy somewhere else. I hope this helps
Actually, a few minutes ago, I PM'd him a link to some USDA approved, "food contact safe" silicone available on the big jungle site for something like $7