According to Gregor at http://www.synth-parts.com/
"fatar contactrubber will fit in most fatar keyboards. They use allways same typ."
https://www.synth-parts.com/produkte/ta ... ACR-CR13PN
Fusion 8HD keybed consists of two circuit boards - The part numbers are most likely FATAR part numbers not Alesis
Part number on the PCB 02.0188-A 26613400 with 49 contact pads
Part number on the PCB 02.0188-A 26613400 with 39 contact pads
It seems the rubber contacts come in either 12 or 13 contact pad strips with groups of 4 contact pads and can be cut to any odd number of contact pads needed.
Fusion 6HD keybed consists of two circuit boards - The part numbers are most likely FATAR part numbers not Alesis
Part number on the PCB ? with 29 contact pads
Part number on the PCB ? with 32 contact pads
pics from Chris's post viewtopic.php?f=13&t=6852#p36017