Do you still have a virgin copy of the wallet file?
If you have, disable your internet, then create a copy of it and open the copy using Electrum version 2.7.18, then export your seed from it.
Download the previous releases here:
https://download.electrum.org/I go to see seed, it shows me the hashed stuff. -snip-
It's not hashed, it's your encrypted seed, in Base-64.