O型環 0128 FKM 20.63 x 2.62mm

The FKM material feels solid and holds up perfectly in the steam wand area where heat is brutal. I’ve gone through three cheaper o-rings here, but this one sealed tight on the first try and hasn’t budged since. Worth the extra few bucks for the peace of mind.

Replaced the old cracked one on my espresso machine and the fit was spot-on for the portafilter groove. The FKM material feels solid enough to handle the daily heat cycles without warping.

Used this to fix a leaking group head seal on my machine and it fits perfectly. The FKM material feels a bit stiffer than the old one but seems like it will handle the heat better.