Glossary

Information about watch terminology.

We've put together a glossary of watch terms and definitions for your references. If you need more explanation on any subject please use the Contact Us page to send us an email where we'll personally respond to your queries.

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O

O-Ring

O-rings are used to seal the backs of watches, which feature either a press-in back or a screw on back. They ensure water resistance. Usually also used on the winding stems of watches and in the winding crowns to protect against the ingestion of water and dust. Normally made from a rubber/plastic compound.

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