Question asked from a reader of wristwatches.tv

Many people don’t know that when you purchase a watch from new it’s actually a sealed unit. The head part of the watch which contains the movement and dial usually in most cases has a small rubber gasket on the case back. The actual rubber gasket can vary in thickness diameter from 0.30mm to 1.8mm. It’s important that the gasket fits correctly or you might find the case back will not fit or a gap appears.

The reason for the gasket is not only to stop water entering the watch but also to prevent dirt and dust. A watch movement is comprised from a number of individual parts which all work together.  Any foreign objects get inside can quite easily stop these parts; some of the part are approximately 0.10mm and connect to other part using teeth on the wheel. If any foreign objects get inside this usually causes further repairs.

The actual seal is covered in a silicone gel which helps create a tight seal. The seal can prolong the life of the watch and also the battery. Usually only specialist watch repair companies carry out a reseal.

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