Vintage Omega with “sticky” plastic movement holder inside mechanism

Wizzar · Nov 10, 2025

Hi guys

One of my Omega’s have “sticky” plastic inside, it’s not solid/hard as it should be, do anyone of you have an idea how can I get movement out are there any pro tips which I can consider doing. Movement needs service I don’t want to damage anything

Thanks all 👍👍

redpcar · Nov 10, 2025

Better you than me. I would use a flat piece of pithwood and slowly scrape out the big stuff away from the movement. Any aggressive solvents would attack the dial so you need to stay away from the acetone. Wear nitrile gloves, that black tar does not come off easily.

Wizzar · Nov 10, 2025

redpcar
Better you than me. I would use a flat piece of pithwood and slowly scrape out the big stuff away from the movement. Any aggressive solvents would attack the dial so you need to stay away from the acetone. Wear nitrile gloves, that black tar does not come off easily.

How can I get then new form/mold I don’t know how to name it. I assume without it movement won’t be in place, don’t know..
Do you maybe have some experience?

redpcar · Nov 10, 2025

I would simply make one from another movement holder or a scrap piece of plastic. That will be the easy part ;-)

Wizzar · Nov 10, 2025

redpcar
I would simply make one from another movement holder or a scrap piece of plastic. That will be the easy part ;-)

Hm I thought the shape must be exactly the same, it doesn’t seem that easy to get. One idea I have in mind to get another example of the same movement and watch reference but it’s kind of crazy idea, just to get plastic holder

redpcar · Nov 10, 2025

I have a million generic watch movement holders that are very pliable. When you get it cleaned up, give me the diameter of the movement and I'll drop a few in the mail to you.
Don't get too far over your skis, you will need to take care of the tar first.

Archer · Nov 10, 2025

I suspect that what you might be seeing there is an old case back gasket that has turned to black goop, and the actual enlargement ring (movement spacer) is probably still okay.

I would clean it as much as you can before removing from the case. You then remove the crown and stem, and remove the movement with the spacer - the spacer can then be separated and cleaned to see if it is okay or not. Clean up the case when the movement is out - 99% alcohol works well to get rid of gasket goop.

If the spacer is actually bad, then the new one is part number 07906200K.

Vercingetorix · Nov 10, 2025

rendo · Nov 10, 2025

I think you will find the white spacer under that gunk. Good luck!

Wizzar · Nov 11, 2025

Archer
I suspect that what you might be seeing there is an old case back gasket that has turned to black goop, and the actual enlargement ring (movement spacer) is probably still okay.

I would clean it as much as you can before removing from the case. You then remove the crown and stem, and remove the movement with the spacer - the spacer can then be separated and cleaned to see if it is okay or not. Clean up the case when the movement is out - 99% alcohol works well to get rid of gasket goop.

If the spacer is actually bad, then the new one is part number 07906200K.

Hm, I thought gasket is not a size of movement spacer because the whole black area is sticky but I will give it a try, so if I understand correctly I can remove black goop from the top layer of the whole area and under that I’ll find movement spacer, then I will be able to remove movement, clean case with alcohol and also clean spacer. I thought it’s the whole spacer which turned into goop but it’s the first time I see something like this

Archer · Nov 11, 2025

Wizzar
Hm, I thought gasket is not a size of movement spacer because the whole black area is sticky but I will give it a try, so if I understand correctly I can remove black goop from the top layer of the whole area and under that I’ll find movement spacer, then I will be able to remove movement, clean case with alcohol and also clean spacer. I thought it’s the whole spacer which turned into goop but it’s the first time I see something like this

Well, we are only seeing one photo, but I have never seen a spacer turn to goop, just seals.

Vintage Omega with “sticky” plastic movement holder inside mechanism

Wizzar

redpcar

Wizzar

redpcar

Wizzar

redpcar

Archer

Vercingetorix

rendo

Wizzar

Archer

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