Product review (5 stars): I DID IT!
purchased at the suggestion of a SEARS repair person.  he said go to amazon and just type in your freezer model number.  He said once it's received, unscrew the existing rubber (he recommends by hand) and install the rubber gasket the same way.  when screwing back in, hand tighten so you don't strip and crack plastic on door.  took about 1 hour.  works great!  saved a couple hundred dollars by doing it myself.  coming from a not so handy female it was pretty easy.