[Mikendebbie]

I have not ordered any replacement gaskets, but there are several types available on Amazon (screen shot below). Also - some folks have experienced leaks at the top hinge, and a bead of silicon caulk solves that issue...see sketch below.
(The details of the hinge sketch are not exactly right - just intended to get you to look at the right spot on the top of the hinge). I seem to recall that there was a recent thread on the subject of hinge leaks but I could not find it.