Hi,   I don't think there is any filler for the processor. I did a search all available fillers for R720/R720XD, the nearest and part named filler for processor is only NYP7X. I'm sure this the one you're looking for, though this is the only one named filler for processor.
I'm looking for the part numbers for both the little CPU plastic cover and the air shroud that covers the CPU socket. It is not the shroud that goes from the fans to the memory, but the shroud that goes on top of the empty CPU socket. It is for a Dell r720xd. Any help is highly appreciated - thanks.
Part number for CPU socket plastic cover and CPU air shroud for Dell r720xd