Leaking brake fluid while car is parked outside

[vr2turbo]

Hi bro,

Here are a couple of pics of the parts I am planning to replace. Unfortunately I didn't take the whole caliper and cylinder pics as soon as I took it out. Now it has been cleaned so there's no more oil stains visible.

The parts are:
1 rubber ring that the piston inserts into
1 rubber cap to seal the cylinder with an opening for the piston to protrude (this is the leak source)
1 ring clip to secure the cylinder rubber cap in place

The rubber ring is more important, that is holding the brake fluid in. The torn rubber cap is just the dust cover

 

[shem_lexluger]

You are right bro, thank you for the info.