Silicone O-ring 0090-20

I was worried about steam escaping from my machine, but this silicone ring seated perfectly and stopped the drip immediately. The genuine part fit like it should, no leaks at all now.

That tight seal is exactly what my machine needed, no more drips from the group head after a full descale. The silicone feels firm and fits perfectly in the slot, took me two minutes to swap. Exactly the kind of genuine part that makes the difference.

Finally found a silicone o-ring that actually fits my machine without leaking. The material feels more flexible than the old rubber one I was using, and it sealed perfectly on the first try. My espresso countertop is finally dry again.