Measure the inside diameter in MM to obtain the correct sizing

Rent the tool

I'm experiencing a similar problem at the moment. I agree with Stefano on avoiding torquing down the 3 hex bolts. It would seem logical, but warping the plate would add to the problem. I'm controlling the "slow" leak by releasing the steam pressure after making an espresso and loosening the boiler c...

A few thoughts: 1. Is this a direct replacement gasket? 2. Is the seat for the gasket on the grouphead free of debris? 3. Lightly lubed the gasket? 4. Properly seated when installed? 5. Not overtightened the bolts and equally torqued?

You referenced performing some work on the machine including piston gasket replacement. Did you remove the grouphead sleeve? I recently replaced my sleeve and could not get the portafilter to lock on to the grouphead. The sleeve wasn't spun in completely. I had to perform the adjustment twice to rea...

Adjust the grind. Make it finer. Firm tamp

Looks like your tank water level is at minimums. With the tank at room temperature, use an appropriate sized socket or crescent wrench and carefully loosen the pressure valve nut. Check spring and pressure valve. It may need cleaning. Carefully reassemble in proper order. Fill tank to about 1/4" fro...

Shaft to piston might have loosened. Remove from grouphead. Inspect shaft to piston contact point for buildup. Using a suitable rod or thin screwdriver shaft, insert in shaft. A latex or grippy rubber glove on the other, twist piston off. Inspect threads. Clean and reseat

Here's the "Material Safety Data Sheet" for the gasket compound... {link} Highlights: Nothing classified as a human carcinogen. Boiling point: 180F Use a brass brush Acetone will work. A gasket remover fluid soaking will certainly do the job. Rinse well

Thanks. Just sprayed a nice shot against the monitor