Kitchenaid cooktop gasket

I thought my repair was complete but I have a question. I bought the gasket that goes around the frame/cooktop. It is listed as front/side gasket. Does the rear not need a gasket/ When I removed everything it seemed to have one. (It was so nasty it was hard to tell what was what.)

If there is a room on the rear then you can put it there too. Otherwise do not worry about it.

Gene.

Thanks, Gene.