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JJ Irani · 30 July 2006, 06:18 AM

Hi guys,

Some of you have recently posted concern about having immersed your Rolex watches into water with the crown unscrewed!!

No worries, guys. A major part of the Quality Control at Rolex is ensuring that their watches undergo waterproofing tests even with the crowns open. Of course, this is not recommended at very great depths when the crown must be screwed down.

Cheers - JJ

colemanitis · 30 July 2006, 06:43 AM

That's good to know, JJ. Thanks for sharing.

homeboy11 · 30 July 2006, 07:14 AM

thanks for the info ,

-Subsevens · 28 May 2008, 12:49 PM

Quote:

Originally Posted by homeboy11

thanks for the info ,

<<<is a HUGE Charger Fan, but man are they killing me with their near championship attempts!!!

Submadatejust · 30 July 2006, 12:48 PM

Quote:

Originally Posted by JJ Irani

....Of course, this is not recommended at very great depths when the crown must be screwed down.

Cheers - JJ

Darn it! I guess everyone who was invited to my underwater Rolex crown-opening party is gonna be disappointed.

mike · 30 July 2006, 01:11 PM

Quote:

Originally Posted by Submadatejust

Darn it! I guess everyone who was invited to my underwater Rolex crown-opening party is gonna be disappointed.

JJ Irani · 30 July 2006, 06:33 PM

Quote:

Originally Posted by Submadatejust

Darn it! I guess everyone who was invited to my underwater Rolex crown-opening party is gonna be disappointed.

moccamachine · 15 October 2006, 01:16 PM

Quote:

Originally Posted by JJ Irani

Hi guys,

Some of you have recently posted concern about having immersed your Rolex watches into water with the crown unscrewed!!

No worries, guys. A major part of the Quality Control at Rolex is ensuring that their watches undergo waterproofing tests even with the crowns open. Of course, this is not recommended at very great depths when the crown must be screwed down.

Cheers - JJ

Hi, sorry to resurrect an old thread but I just found this tread form searching the forum. I wonder how did you find out about the quality control at Rolex. Not that I doubt your comment but I tried searching for some technical info about Rolex test but came up with nothing.

I actually have a related question as well. I noticed that the twinlock crown on my GMT-II can be tighten a little bit more than when I first got the watch. Now, thinking back, I'm not sure if I tight the crown in enough initially so I worry about the water resistant a little bit. If the twinlock crown do have some water resistant even when it is unscrewed, then I am very much relieved (since mine is screw in but not very tight :)

JJ Irani · 15 October 2006, 02:26 PM

Quote:

Originally Posted by moccamachine

Hi, sorry to resurrect an old thread but I just found this tread form searching the forum. I wonder how did you find out about the quality control at Rolex. Not that I doubt your comment but I tried searching for some technical info about Rolex test but came up with nothing.

I actually have a related question as well. I noticed that the twinlock crown on my GMT-II can be tighten a little bit more than when I first got the watch. Now, thinking back, I'm not sure if I tight the crown in enough initially so I worry about the water resistant a little bit. If the twinlock crown do have some water resistant even when it is unscrewed, then I am very much relieved (since mine is screw in but not very tight :)

Hi Mocca,

A big welcome to TRF!! I do get some good first-hand info from my AD.

As regards your GMT-II, there is no 'O-ring' on the stem as this model is fitted with the TWINLOCK crown. However, there is a seal on the inside of the crown which you can't see. As you tighten the crown down onto the stem of your watch, the seal inside does get compressed. Thus, you will notice you can tighten the crown a little more than before.

My advice to you is NEVER tighten too much. Just enough until the crown STOPS turning and enough that you should be able to unscrew it again without too much of an effort.

Yes, the GMT-II will remain waterproof even with the crown unscrewed. There are seals around the stem of the crown which act as hermetic seals.

However, I would not recommend anyone do this on a regular basis...i.e. leaving the crown unscrewed. Please make it a habit to always screw down the crown and make sure you don't tighten it too much.

Cheers - JJ

moccamachine · 15 October 2006, 04:12 PM

Thanks :) Very good info.

fat-sam · 15 October 2006, 10:05 PM

Please make it a habit to always screw down the crown and make sure you don't tighten it too much.

JJ Irani · 16 October 2006, 03:38 AM

Quote:

Originally Posted by fat-sam

Please make it a habit to always screw down the crown and make sure you don't tighten it too much.

I just said that, Sammy....and why are you crying?

Rockrolex · 16 October 2006, 03:40 AM

Quote:

Originally Posted by JJ Irani

I just said that, Sammy....and why are you crying?

He's upset that you said it first. He wanted to be the one to pass on this good advice.

fat-sam · 16 October 2006, 08:45 AM

Quote:

Originally Posted by JJ Irani

I just said that, Sammy....and why are you crying?

i deleted the quote marks while editing... i'd love to keep my crown screwed in.... if i could find it

Letsgodiving · 28 May 2008, 11:28 AM

That cutaway of the trip-lock is excellent. I'ver seen that before.

-Subsevens · 28 May 2008, 01:08 PM

Sorry all, I was off topic with that last response...

Baptistman · 28 May 2008, 05:33 PM

still wouldent risk it though. But good to know.

SPACE-DWELLER · 28 May 2008, 11:47 PM

Thanks for sharing that useful piece of information, JJ!

30 July 2006, 06:18 AM	#1
JJ Irani Fondly Remembered Join Date: May 2005 Real Name: JJ Location: Auckland, NZ Watch: ALL SOLD!! Posts: 74,317	Waterproofing QC at Rolex !! Hi guys, Some of you have recently posted concern about having immersed your Rolex watches into water with the crown unscrewed!! No worries, guys. A major part of the Quality Control at Rolex is ensuring that their watches undergo waterproofing tests even with the crowns open. Of course, this is not recommended at very great depths when the crown must be screwed down. Cheers - JJ __________________ Words fail me in expressing my utmost thanks to ALL of you for this wonderful support during my hour of need!! I firmly believe that my time on planet earth is NOT yet up!! I shall fight this to the very end.......and WIN!!

30 July 2006, 06:43 AM	#2
colemanitis "TRF" Member Join Date: Apr 2006 Real Name: Jeff Location: Florida Watch: PAM 1090 Posts: 3,723	That's good to know, JJ. Thanks for sharing. __________________ Member #471

15 October 2006, 10:05 PM	#11
fat-sam "TRF" Member Join Date: Oct 2006 Real Name: Manuel_Winde Location: London N1- UK Watch: Reverso Duoface Posts: 578	Please make it a habit to always screw down the crown and make sure you don't tighten it too much. __________________ This confession has meant nothing

28 May 2008, 11:28 AM	#15
Letsgodiving "TRF" Member Join Date: Jul 2007 Real Name: Mike Location: Virginia, US Watch: SD 16600 Posts: 4,320	That cutaway of the trip-lock is excellent. I'ver seen that before. __________________ The fool, with all his other faults, has this also - he is always getting ready to live. - Epicurus (341–270 BC)

28 May 2008, 05:33 PM	#17
Baptistman "TRF" Member Join Date: Oct 2005 Real Name: Jon Location: UK Posts: 2,405	still wouldent risk it though. But good to know. __________________ Whatever the watch, it's your wrist, it speaks to you, enjoy it

30 July 2006, 07:14 AM	#3
homeboy11 Member Join Date: Jul 2006 Location: san diego Posts: 58	thanks for the info ,

15 October 2006, 04:12 PM	#10
moccamachine "TRF" Member Join Date: Oct 2006 Location: USA Posts: 3	Thanks :) Very good info.

28 May 2008, 01:08 PM	#16
-Subsevens "TRF" Member Join Date: May 2008 Real Name: Eric Location: So. California Watch: Submariner Posts: 382	Sorry all, I was off topic with that last response...

28 May 2008, 11:47 PM	#18
SPACE-DWELLER "TRF" Member Join Date: Apr 2007 Real Name: Bo Location: Denmark Watch: Rolex, of course! Posts: 22,436	Thanks for sharing that useful piece of information, JJ! __________________ With kind regards, Bo LocTite 221: The Taming Of The Screw...

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