OK, many thanks, are different. I have another question, on the link puts the housin carries an o-ring 14 x 1, I think it is a error, not?, tilemahos v2 does not ring in the housing
Yes,
In short:
Tilemahos v1 comes with: 2 - 14 x 1 o-rings, one on the base and other on the rebuildable part.
Tilemahos v2 comes with: 1 - 14 x 1 o-ring on base.
Tilemahos v2 plus comes without o-rings at base nor rebuildable part.
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Originally the Tilemahos v1 comes with two optional o-rings:
One on the base and other one on the rebuildable part, as you can see on the below picture.
The o-ring on the rebuildable part was meant to prevent it to unscrew while adjusting the juice flow, it was removed on the later versions (v2 & v2 Plus): if the rebuildable part is tightened enough, it won't unscrew when adjusting the juice flow.
Some users had problem to fully screw the rebuildable part in the base with the o-ring installed, sometimes that caused that the center pin did not protruding long enough from the 510 connector and also an unstable negative connection.
The o-ring on base is to prevent leaks mainly when using the stainless steel tank and to prevent it from easily unscrew. It came by default with the Tilemahos v2.
When using the plexiglass tank (clear tank), that o-ring at base is not needed: as the Tilemahos v2 Plus comes by default with a clear tank, it doesn't come with that o-ring, although, if you buy later a stainless steel tank, you will receive also the mentioned o-ring with it, in case you detect any leakage.