English to German Tech/Engineering Mechanics / Mech Engineering hydraulics

Hello
I have to add a couple of words to an existing translation and my usual translator is unavailable.
The original phrase was:

Exclusive features such as the synchronized internal distributor |2| in line with the main shaft, the oil cushions |3| for damping vibrations and the hydraulic system with dynamic seals |4| which totally eliminate the need for seals. A decisive factor for lengthening hammer life span and substantially reducing breakdowns

while the new phrase is

Exclusive features such as the synchronized internal distributor |2| in line with the main shaft, the oil cushions |3| for damping vibrations and the hydraulic system with dynamic seals |4| which totally eliminate the need for seals ***in the distribution area***. A decisive factor for lengthening hammer life span and substantially reducing breakdowns

I was thinking of "im Distributionskreislauf" but then I'm English and don't expect to speak excellent Engineering German! Any help would be much appreciated