Vintage Seiko Diver Spacer/Wear Ring for Underneath Bezel

Vintage Seiko watches from the late 1960s often had a plastic wear ring that sat in a groove in the case, located underneath the bezel. This ring would bear against the bottom rim of the bezel to apply some resistance and prevent a metal to metal scraping feel when rotating.

Seiko never published a part number for these and most of the time, the old spacers were left in place because they can't be replaced unless one is custom made. Many old watches just don't have anything in that groove anymore and the bezel doesn't have a good feel when rotating.

A few models utilizing this spacer:
6105-8000, 5126-6030, 5126-8080, 5126-8090, 6106-8120, 6119-8140, 6117-8000, 6106-8100, 6119-8460, 6106-8589
I'm sure there are more; these are just the ones I've personally seen.

So here is a part that can be printed and used as a replacement for that spacer. It's very tricky to print because it is a thin part. I used a Bambu P1S to print it with these settings:

Line Width: 0.3 mm
Layer Height: 0.2 mm

The spacer has the following nominal dimensions:
ID: 36 mm
Thickness: 0.4 mm
Radial wall thickness: 0.6 mm

It's best to let the part cool down before removing it from the build plate so you don't put a kink in the part!

Saldog