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Skin diver Crown-tube O-ring? Squale case

panchoskywalker
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I have this Erster skin diver that comes with a Squale case and I can't figure which O-ring might fit the tube & crown combination. I've tried this O-ring inside the tube as there is a small rehaut where it fits perfectly but pushing the crown inside is impossible without breaking the O-ring.

Movement is Felsa 4007N
O-ring is 2.8mm OD, 1.8 ID x 0.5 thick.

tube.webp crown2.webp 1.webp 2.webp
 
sah
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Bump this thread as I want to know as well. Maybe @Archer can comment
 
Archer
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Did it have an O-ring in the case tube before you tried adding one?
 
Archer
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panchoskywalker panchoskywalker
No it didn't.
So are you sure there’s supposed to be one there?

It’s possible the only seal is inside the crown.
 
panchoskywalker
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Archer Archer
So are you sure there’s supposed to be one there?

It’s possible the only seal is inside the crown.
I am not sure of anything, the watch was not working when I found it so I am trying to make it work correctly.

It might use only a o-ring inside the crown as you say. I'll try that.
 
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