Found: Acros The Clamp Adjustable Headset - Bikerumor
compression ring (ai-70) for canyon | headsets | core | products | acros sport GmbH
Acros Ai-70 fiber: I was replacing the headset bearing and this sealing broke. Is it possible to find it somewhere? As you can see the headset is fine. Bike model is Ultimate cf SL 2016 : r/CanyonBikes