Crown size query

[Davey57]

I am wondering what sort of crown might fit this watch case. In the past someone has done a “lovely” job of sticking a big blob of solder on. The case tube diameter is 4mm and the length of the pipe where I think the stem screw in is also about 4mm. I haven’t tried to separate the stem from the crown yet. I’ve had a look about but can’t seem to see anything to fit a case tube of that size. While cleaning the case I dug out what I thought was gunge from the inside of the tube, turned out it was a cork gasket. I doubt I’m going to be able to replace it sadly.  

Any ideas chaps?

[yankeedog]

file the tube flush, install new tube and crown

[rogart63]

Those crown are a little special . There is a gasket in the tube instead of the crown. Not sure what they are called. maybe you can use a normal crown that you take the gasket out from. I will see if i find any so i can show you how it looks. 

[Nucejoe]

Hi dave,  Do not remove or file the tube. A crown to fit over the tube is all you need. 

I cut a seal to fit inside the crown, thats your water sealer,   insulated electric wires covers are normaly suitable to cut a seal out of.

 

[oldhippy]

You need what are called a water proof button.

[vinn3]

good show!   on my vintage crowns,  i often replace the crown with one of larger diameter (fat fingers) and save the original.  vin

[Davey57]

So it’s something like a divers watch crown but without the threads?

[oldhippy]

7 minutes ago, Davey57 said:

So it’s something like a divers watch crown but without the threads?

Yes that's right.

[rogart63]

Something like this it should look. 

[Davey57]

Ok thanks all  I’ll have a scout about and see what I can find. 

[oldhippy]

Here is a link for the type you need.

https://www.cousinsuk.com/category/waterproof-watch-crowns

Here is a picture of the sort you need.

[Davey57]

Cheers OH. I’ve looked through those but none that I can find go up to 4mm case tube diameter. Is that size quite rare?

[Nucejoe]

2 hours ago, Davey57 said:

Cheers OH. I’ve looked through those but none that I can find go up to 4mm case tube diameter. Is that size quite rare?

OH shows the right type, you just need the right size. The O ring inside can be cut out electric wire insulation, for an old one. Cousins may not have those, but not rare.