This big freezer (model: UFD-177N) came with our home we bought last year. It looks like it's in great condition. The electrical cord had been placed on top with some of it hanging to keep the door ajar. When we turned it on, major frost built up and it was noticed that the gasket was not making a tight seal at the point on top where the electrical cord had been placed. We are looking for a new gasket to fit this model. Or, if there is a way to make the current gasket go back to its original sealing capability, that would be accepted info as well.

The stores I've called say it is too old for getting a replacement and that the dimensions don't help. But, here are the dimensions of the gasket anyway:
57” tall x 30 1/2” wide x 1” thick.

Thanks.