Clark
It did not leak out the sides or front. If I had it full I'm sure it would have leaked out the back while on it's side.
I pulled my Pelican 35 out to look at it and it has the same small gap in the gasket. Wonder if it's intentional so it's not completely air tight for some reason since John's Yeti does the same thing. Maybe to prevent a vacuum lock on the lid or something?