Product review (5 stars): Easy DIY!
I found a youtube video about fixing the door on the Samsung and so bought this part -  to do what turned out to be an incredibly simple repair job. 1) Watch the video
2) Buy the part
3) Remove gasket.
4) Remove 3 screws, pull out the part, unplug it. Plug the replacement in, replace 3 screws.
5) Replace gasket.
6) Bask in the glory of your heroic exploit.

Of course it would have been simpler to get a repair service to do it ($300-400) or, as the repair service recommended, replace the washer....