Noun
a gasket consisting of a flat ring of rubber or plastic; used to seal a joint against high pressure
Source: WordNetO-ring
An O-ring seal in the right booster rocket failed at liftoff, leading to subsequent structural failures. Source: Internet
Contractor CH2M Hill Plateau Remediation Company informs workers, saying the Chem-OV cartridge, when installed on respirator after the O ring, creates a “potential pathway of chemical/radiological contaminants to personnel.” Source: Internet
In the case of glass plugs, the joint contact is always a rubber O-ring but they are still prone to shattering. Source: Internet
Dual O-ring seal on acrylic rear plate with clear view of occupant head. Source: Internet
The contact with the bevel is made by an O-ring fitted to the tip of the plug or by the plug itself. Source: Internet
Design engineers added a third O-ring seal to the joints between the segments after the 1986 Space Shuttle Challenger disaster. Source: Internet