I have the above machine. It has started leaking out of the group head. Before sending it off for a service (as I have to send it through the post which bothers me a little) I thought it would probably be worth just replacing the seal. I am lucky to have a handy hubby who can usually attend to this sort of thing. He did a lot of work on my old gaggia over the years, but has not done any work on the Lelit as yet.

Is this a job that can be done successfully at home?

Thanks

ETA- I notice that you can buy the seals in silicone or rubber. Any recommendations of one over the other?