I have made gaskets for two of those machines
Those are fun dishwashers, but the gaskets are problematic. I have made gaskets for two machines. One worked perfectly, the other I never could get to seal. I put that one aside several years ago and haven't returned to it.
The original gaskets were cork. So I went to an automotive supply store and bought a small roll of cork gasket material. I then very carefully removed the gasket from the dishwasher and traced it onto the roll material to cut it out.
The automotive store I went to also sold gasket material that was synthetic. The cork seemed to work better.
Finally, if I remember correctly, the drain valve solenoid also has a gasket. I had less success with that one.
If you aren't ever going to the assemblies apart again you could consider using a silicone type sealant, just be aware of the more more permanent nature of your fix.