As far as I'm aware, most hydraulic bicycle disc brakes* are 'open' designs where it's possible for the system to eject fluid from the reservoir should the pressure get too high for whatever reason.
* obvious exception - Juintec cable actuated.
@Howard started
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As far as I'm aware, most hydraulic bicycle disc brakes* are 'open' designs where it's possible for the system to eject fluid from the reservoir should the pressure get too high for whatever reason.
* obvious exception - Juintec cable actuated.