Looking any advice to repair lower rudder ring on Bénéteau

Mar 30, 2014
28
Beneteau First 375 qc
Dear beneteau owners, I did drop the rudder on my 375 for repair and noticed that there is a small play between the rudder post and the lower metal ring.
Also, it looks like there is a kind of very thin layer of rubber coated on the lower metal ring..... Any tips or advice on this?
Regards