Waterproof?

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Nightstalkers

Guest
A few years back watches were sold as being waterproof. The whole idea of that term must have been objectionable so the Federal Trade Commission got into the act and declared that water resistance must be stated in terms more easily understood. Water proof was dropped from the vernacular of speech and terms more endearing were invented.
Now we use terms like “Atmospheres”, “Bars” and of course the everlasting “feet”, “meters”, etc.
Water and moisture is everywhere. Water can and usually does penetrate a watchcase when least expected. Moisture inside a watch can destroy the movement and ruin a very good watch.
When water does make its way inside a watchcase the watch should never be dried by placing it inside a microwave or oven. The destructive effects of this sort of treatment can be easily imagined. Take the watch to your nearest watchmaker. Usually watches can be dried but damage also often may necessitate a cleaning, overhaul or service of some sort.
Water penetration can be seen by moisute appearing on the underside of a watches crystal. This is a phenomenome that is caused by temperature differences inside a watchcase and usually to the benefit of the movement as the moisture inside a case may move to the crystal rather than to gather on the working movement. If seen on the crystal many times the movement may be seen to continue working. The assumption can be drawn that moisture is not, at present, on the movement and getting a watch to a technician to dry it out is important.
Water can enter a case by case cracks, through the crystal, crown or the caseback.
Water cannot go through the crystal glass if it’s not cracked. It must enter through a crack or separation of the seal at the case and crystal connection.
Caseback seals are often compromised after battery replacement. The caseback seal must be broken when a power cell is replaced and unless resealed, often water may enter.
The crown, which on modern watches is the device that is used to set the time or date may wear out with age as well. The crown seals may harden and become brittle which will allow water to pass along the stem into the watch. Sometimes when water makes entry through the crown it travels right to the crystal and can be seen. The most damaging moisture is from caseback penetration.
In 1926 Rolex produced the first of the new designs of water resistant watches. The name Rolex and water resistance is almost one. Other watches have been made and are perhaps as secure against water penetration as is a Rolex watch but none has gained the worlds attention like Rolex watches have.
In any case when battery’s need to be replaced, professional replacement is always recommended. The ability to test a watch for water resistance is not always available from mall and even established jewelers. Usually, battery replacement does not guarantee that a water resistance check has been made.
 
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Nightstalkers

Guest
This was typed up after a customer bought in a watch that had water in it and the customer had decided to attempt using the microwave to dry it. Needless to say, the watch was completely ruined. I must note that the water inside of the case caused some bubbling in the mineral glass crystal and it was quite a thing to behold.

The times I forget my camera...
 

Oversoul

The Tentacled One
Nightstalkers said:
I must note that the water inside of the case caused some bubbling in the mineral glass crystal and it was quite a thing to behold.
Interesting. I wish I could see a picture. I wonder what exactly happened there.

Any idea as to the composition of the crystal?
 
N

Nightstalkers

Guest
The composition of the crystal is simple mineral glass.

What I assume happened is the water inside was heated quick enough to beat the expansion rate of the watch case and crystal and simply expanded in the easiest direction it could.

This was on a Rolex watch and sadly enough I simply told the lady that I'd have to send it back to Rolex and they'd suggest purchasing a new watch. She took the watch and decided to get a second opinion.


Heck, I was offering $100 discount on one of my personal Rolexes if she wanted to trade in her clearly useless watch. I wanted the watch for the opportunity to create some sort of a display saying "don't put your watch in a microwave to dry it out, take it to a trained watchmaker"
 

Oversoul

The Tentacled One
Nightstalkers said:
The composition of the crystal is simple mineral glass.
The only place I really got to learn about that stuff was in my high school material science class. But from what I remember, there are different types of mineral glass.

I wanted the watch for the opportunity to create some sort of a display saying "don't put your watch in a microwave to dry it out, take it to a trained watchmaker"
Heh. Classy.
 
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