Fortis parts sourcing - gaskets

[Adversary]

Dear friends, some help is needed.
While ago I bought an B42 chronograph, full set, excellent condition and serviced (no receipt though). Everything sounds peachy.
The watch came, yes - it was a full set, no - it was not in excellent condition, but it wasn´t that bad so I decided to keep it.
And into the drawer, worn occasionally until one day I noticed fog on the inside. Quickly into the rice bowl with the crown pulled. Everything ok after that until I noticed it´s running late, a lot.
And off it goes to the watchmaker.
Now, the bad part.
It looks like it´s never been serviced, amplitude is very low so a full service is scheduled, some cosmetic work and changing the gaskets.
Why bad? Gaskets are nowhere to be found, CousinsUK has some similar dimensions but they won´t fit. And that´s not all, crown and pushers have double gaskets, the watch has 200m WR, and one crown gasket is missing :facepalm Oddly, 3ATM WR test passed with flying colours.
There´s no Fortis AD in my country and all the local watchmakers don´t have dimensions that watch requires. I contacted Fortis CH but they don´t sell unless you have contracts with them. They offered kindly to send the watch for service. That is not an option at the time, because it's disassembled somewhere else.
So, anybody knows where to source these O-ring gaskets?
I'll provide the specs and watch reference when I get home.

[gcleminson]

Ignore - just re-read your post. Could you ask your watchmaker to contact them? Maybe he'd have more luck.

[walkerwek1958]

I’’m surprised Cousins don’t have any O rings that can be fitted, they have a very big range. Finding the right size can be difficult, they’re not easy to measure.

[Adversary]

My watchmaker will try contacting them although they don't collaborate, maybe they'll have mercy and provide with the parts.
Those I found on cousins he said won't fit.

Now, you'll have to excuse my scribble, no CAD at the moment.

[Adversary]

And this is the watch, reference 638.10.141.3

[gcleminson]

That's one hell of a photo

And this is the watch, reference 638.10.141.3

[Adversary]

That's one hell of a photo

Thanks!
Courtesy of our member Nono, he did the photo session.