Product review (5 stars): Makes reassembly much easier.
After disassembling my dishwasher's internals to fix a blocked turbine (because of pistachio shells jammed in the outflow drain) I found that the rubber gaskets between the different parts expanded, and I could not reliably fit them back into the grooves.  After considering options like melting, reforming, gluing, etc, I decided to take a chance on the replacement parts.  This part fit the grooves perfectly, and allowed me to reassemble the covers without issue.  The DD62-00052A and the DD62-00055A were both necessary.