We had debated this before when a member commented that his capsule had turned blue after only a few months. We discussed all sorts of reasons how moisture could have entered the case, but today the Sinn service center provided another plausible explanation for this phenomenon:
It may not be the watch case or case seals that have failed, it could be the capsule itself.
In my case, the capsule had turned blue in less than a month, while capsules on my other Sinns lasted for 5 years, or more.
Discussing this with the service manager when I picked up the watch again, he mentioned that in my case the capsule itself had failed. The outside of the capsule is covered by a small glass disk and when this disk does not seal properly, moisture enters the capsule from the outside and turns it blue.
Apparently, the inner end of the capsule has a seal that prevents water from penetrating into the case this way, protecting the integrity of inner case and movement.
Interesting thought; all that needed to be done today was check the watch, re-fill the de-humidifying gas and fit a new capsule.
Problem solved - quick and easy.
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