Definition & axiom
⚠ Conflicts with the ISO 15926-4 primary definition
Label (EN)
gasket
Label (PT-BR)
Definition (EN)
Definition (PT-BR)
Semi-formal axiom (Aristotelian)
Axiom type
LLM classification basis: function-based → ≡
Gasket is defined by its sealing function - to prevent leakage between mating surfaces. While gaskets have structural properties (closed loops, deformable material), their identity is fundamentally about what they do (seal joints) rather than their specific physical configuration, which varies widely across subtypes.
Validation status
Why primitive (necessary only)
Reviewer notes
FOL theory & disjointness
First-order logic theory (generated)
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Disjoint with
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Expert review
Axiomatization steps
1
Identity-Giving Function
✓ done
⚠ not anchored
SealingFunction → SealingProcess
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COPI-Core operation
⚠ Process parent
PlannedProcess reaches no COPI-Core operation, and no gap (out of scope / coverage gap) is recorded.
LLM rationale:
The identity-giving function is sealing - preventing fluid or gas leakage between mating surfaces. All definitions consistently emphasize this sealing capability as the fundamental purpose that makes a gasket a gasket.
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Expert review
2
Genus Proximus
✓ done
MaterialArtifact
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Genus (genus proximum)
Most specific superclass — may be a domain class like "Valve" or an IOF-Core root.
BFO/IOF-Core Root
bfo:Object branch
bfo:ObjectAggregate branch
bfo:ImmaterialEntity branch
LLM rationale:
No domain-specific superclass exists in the already-enriched classes. While ISO 15926 suggests 'SEAL' as a parent, this generic seal category is not yet defined in our ontology. Gaskets are typically monolithic deformable components (not assemblies with removable parts), making MaterialArtifact the appropriate BFO root.
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Expert review
3
Differentia Specifica
✓ done
∃hasComponentPartAtAllTimes.DeformableMaterial ⊓ ∃participatesIn.SurfaceSealingProcess ⊓ ∃hasProperty.ClosedLoopGeometry
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Conditions that distinguish
Gasket
from sibling classes under genus
MaterialArtifact.
Only what is not already entailed by the genus.
Differentia expression
Differentia (natural language)
LLM rationale:
The differentia captures the three key distinguishing characteristics: deformable material construction, closed-loop geometry, and specific application to low-movement surface interfaces. This distinguishes gaskets from other sealing components.
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Expert review
4
Necessary Parts
✓ done
no necessary parts
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Consider part-whole relations beyond subsumption:
hasComponentPartAtAllTimes (universal, structurally essential)
· hasComponentPartAtSomeTime (contingent, optional component)
LLM rationale:
Gaskets are typically monolithic components made entirely of deformable material. More specific part requirements (metal jackets, fillers, etc.) vary by subtype and should be modeled at those levels.
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Expert review
5
Process Participation Signature ⟨I, O, T⟩
✓ done
MatingSurface → SealedJoint
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Inputs (I)
Outputs (O)
Transformation (T)
LLM rationale:
Gaskets transform the geometry of a joint by deforming under compression to fill gaps and create a continuous seal barrier between two mating surfaces.
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Expert review
More
Alternative labels
none
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Synonyms / alternative labels (comma-separated) — skos:altLabel
Language auto-detected on export (PT if the label contains accents, EN otherwise).
Properties as BFO qualities
no CFIHOS/DEXPI properties
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No CFIHOS/DEXPI properties found for this cluster.
Custom axioms
none
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Axioms not produced by the pipeline. Each is appended verbatim as an
rdfs:subClassOf restriction on Gasket.
Write the restriction block in Turtle syntax (without the leading
rdfs:subClassOf).
Example: [ owl:onProperty :hasPart ; owl:someValuesFrom :Wellhead ]
Cross-standard divergences
none detected yet
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Click "Detect divergences" to analyse cross-standard disagreements for this cluster.
