Case tube for Seiko 4006-7000

[Court]

I have searched high and low and can’t find the size or even a part number for the crown case tube for an Aug ‘69 4996-700O Belmatic.

 

Any chance anyone here could share those details? It was not listed, from what I could find, in the case parts list references found in the forums.

thanks for the assist!

Edited March 20 by Court

[RichardHarris123]

I have read that seiko don't supply case tubes, not sure if that's correct.  If not then generic ones are available, sometimes called pendant tubes.

[Waggy]

I tried 3D printing one from TPU for another case/model, it was at the limits of my printers tolerance, but worked OK after several design iterations. I've also printed a few oddball shaped gaskets (TV/square etc) in the same material - probably wouldn't pass a full water hydro test, but better than nothing and OK for everyday wear.