o ring
Definition
Noun: A mechanical gasket in the shape of a torus (a doughnut-shaped ring). It is designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface. It is typically used to seal a joint against the passage of fluids or gases, especially under high pressure.
Usage
An O-ring is a specific, standardized sealing component. The term is used to refer to the part itself, its function, or its material condition. * It is a countable noun (e.g., an O-ring, two O-rings). * It is often specified by its size (e.g., a 2mm cross-section O-ring) and material (e.g., a Viton O-ring).
Examples
- Noun:
- The hydraulic leak was caused by a degraded O-ring.
- Before reassembling the pump, remember to install the new O-ring.
- This kit includes all necessary gaskets and O-rings.
Advanced Usage
- "O-ring seal": This phrase explicitly names the sealing function. While "O-ring" alone implies a seal, "O-ring seal" is often used in technical specifications and manuals.
- The connector features a reliable O-ring seal for waterproofing.
- "O-ring groove" or "O-ring gland": The machined channel or space into which the O-ring is installed.
- Clean the O-ring groove thoroughly to ensure a proper seal.
Variants and Related Words
- Gasket (n): A broader category of sealing materials or shapes placed between surfaces to prevent leakage. An O-ring is one type of gasket.
- Seal (n): A general term for any device or component that prevents the passage of fluid or gas. An O-ring is a static seal.
- Backup ring (n): A rigid ring used in conjunction with an O-ring in high-pressure applications to prevent extrusion of the O-ring into the gap.
Synonyms
- Sealing ring: A more general term that can describe O-rings and similar circular seals.
- Toroidal seal: A technical synonym referencing its doughnut (torus) shape.
Related Phrases
- O-ring failure: The event where an O-ring does not perform its sealing function, often due to wear, chemical degradation, or improper installation.
- The investigation concluded that O-ring failure was the primary cause of the accident.
- O-ring kit: A collection of O-rings of various standard sizes, used for maintenance and repair.
- Every mechanic should have a basic O-ring kit.
Noun
-
a gasket consisting of a flat ring of rubber or plastic; used to seal a joint against high pressure
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