O-ring
An O-ring is a loop of elastomer with a round (o-shaped) cross-section used as a mechanical seal. They are designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface.
History
The o-ring was invented in 1936 by a then 72 year old Danish-born man, Niels Christensen. During the second world war, the US government bought up critical war-related patents and gave the rights away to manufacturers. Christensen got a lump sum payment of US$75,000 for it.
Related Topics:
1936 - Danish - Niels Christensen - Patent - US$
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~ Table of Content ~
| ► | Introduction |
| ► | History |
| ► | Theory and design |
| ► | Material |
| ► | Other seals |
| ► | Challenger disaster |
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