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saskmh · 29 October 2016, 05:49 AM

I noticed something on my GMTII today. When the crown is screwed down it seats tight against the watch case. There is no feeling of it snugging down against the o-ring like there is on my Explorer (or any other screw crown watch I have) it just turns freely until it hits the case. Is this right?

My concern is that the tube is installed too far into the case and the o-ring in the crown may not me compressing as it should. The watch just came back from RSC so I assume it passed the pressure test but one never knows.

I'll try to get some macro photos this evening.

What do the experts think?

saskmh · 29 October 2016, 05:54 AM

Now that I am thinking about it more I don't see how the tube can be installed too far into the case unless the tube gasket was left out...

Any thoughts? or am I just being OCD and over-thinking this?

tifosi · 29 October 2016, 05:59 AM

I don't feel any difference in resistance until my crown just stops turning. New Sub.

Onikage · 29 October 2016, 06:11 AM

Both of mine just stop. If the dial gets condensation it's time to worry imo.

Tools · 29 October 2016, 07:13 AM

The crown should never contact the case; if it did, the crown gasket would not seal.

Your watch will easily pass any pressure test if the crown gasket is omitted because of the o-ring seals inside the tube around the stem.

29 October 2016, 05:49 AM	#1
saskmh "TRF" Member Join Date: Dec 2012 Location: Canada Posts: 1,027	Crown seated properly? I noticed something on my GMTII today. When the crown is screwed down it seats tight against the watch case. There is no feeling of it snugging down against the o-ring like there is on my Explorer (or any other screw crown watch I have) it just turns freely until it hits the case. Is this right? My concern is that the tube is installed too far into the case and the o-ring in the crown may not me compressing as it should. The watch just came back from RSC so I assume it passed the pressure test but one never knows. I'll try to get some macro photos this evening. What do the experts think? __________________ RCN (Canadian) Tudor Milsub database co-manager

29 October 2016, 05:54 AM	#2
saskmh "TRF" Member Join Date: Dec 2012 Location: Canada Posts: 1,027	Now that I am thinking about it more I don't see how the tube can be installed too far into the case unless the tube gasket was left out... Any thoughts? or am I just being OCD and over-thinking this? __________________ RCN (Canadian) Tudor Milsub database co-manager

29 October 2016, 05:59 AM	#3
tifosi "TRF" Member Join Date: Feb 2009 Real Name: Russ Location: Southern NJ Posts: 5,760	I don't feel any difference in resistance until my crown just stops turning. New Sub. __________________ Russ

29 October 2016, 06:11 AM	#4
Onikage "TRF" Member Join Date: Feb 2011 Location: England Watch: 16710, 16628 Posts: 7,758	Both of mine just stop. If the dial gets condensation it's time to worry imo. __________________ GMT II 16710 TRADITIONAL ( D- Serial #) ROLEXFANBOY P-Club Member #4

29 October 2016, 07:13 AM	#5
Tools TRF Moderator & 2024 DATE-JUST41 Patron Join Date: May 2007 Real Name: Larry Location: Mojave Desert Watch: GMT's Posts: 43,049	The crown should never contact the case; if it did, the crown gasket would not seal. Your watch will easily pass any pressure test if the crown gasket is omitted because of the o-ring seals inside the tube around the stem. __________________ (Chill ... It's just a watch Forum.....) NAWCC Member

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