What Causes Moisture and Fog Inside a Watch Case

Watch Encyclopedia 2,017
What Causes Moisture and Fog Inside a Watch Case
Watch Encyclopedia2,017

Why is my watch foggy?

There is fog inside and outside, indicating that there is water vapor inside and outside. Generally speaking, although the watch is sealed, there are still very small holes in the joints of the case, especially older watches with larger holes. When clothes are washed manually or when it rains, water can enter through these small holes, especially the heat in the kitchen, which is more likely to penetrate into the case. In addition, the temperature and humidity are high in summer. If the watch suddenly encounters cold, the air with more moisture inside and outside the watch will condense into mist or water droplets and stick to the watch glass. If there is fog in the watch, it should be repaired in time and the fog and water droplets should be removed to prevent water from entering the watch for a long time, causing the parts to rust and the surface to become discolored. If fog occurs accidentally, it will disappear naturally after the climate dries, and it will have little impact on the movement.

What Causes Moisture and Fog Inside …

What should I do if my watch fogs up?

The fog on the clock glass cannot be completely solved by direct heating and baking. The fog will temporarily disappear after the watch is heated. In fact, the water vapor does not escape from the case, but will run to a relatively low temperature place, because the water mist inside the watch will temporarily disappear. To fundamentally solve the problem of watch fogging, you must open the back cover of the watch, dry the movement and case thoroughly, replace the water resistance sealing ring, or apply silicone oil to the sealing ring.

To try to solve the fogging phenomenon of the watch yourself, you can pull out the watch entirely, place it at 9 o'clock, heat the watch to about 50 degrees (can be baked with an incandescent lamp), wait 2 hours, then pull out the watch completely, put it in a box with a desiccant such as silica gel (calcium chloride), and leave it for more than 24 hours. But this only applies to mild watches. If the fog has reached the point where water droplets can be seen, it should be sent to a watch shop for repair immediately.

How to avoid fogging on your watch.

In order to prolong the service life of the watch, you should try to avoid fog or water droplets on the surface of the watch. Do not wear the watch when washing clothes, washing your face, or taking a bath. On rainy days, you should pay more attention to prevent it from raining.

Wash your hands and clothes, or when it rains, moisture seeps into the case. In addition, in summer, the temperature is high and the humidity is high. If the watch suddenly encounters cold, the air with more moisture inside and outside the watch will condense into fog or water droplets, which will stick to the watch glass. So, try not to wear a watch in this situation.
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