{
  "title": "Mechanical rubber product data for AI seal and dimension checks",
  "source_page": "https://fiund.com/industries/mechanical-rubber-seal-dimension-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "Inner diameter and cross-section are not interchangeable",
    "context": "The exercise uses drawn rings and fictional caliper readings. It makes no fit or suitability recommendation.",
    "records": [
      [
        "1",
        "Drawing",
        "Part K2 mock keys: inner diameter 20 mm, section diameter 3 mm."
      ],
      [
        "2",
        "Sample A",
        "Inner 20 mm, section 4 mm."
      ],
      [
        "3",
        "Sample B",
        "Outer 20 mm, section 3 mm; inner reading omitted."
      ]
    ],
    "question": "Which sample has the two explicitly documented dimensions?",
    "answer": "Neither. A matches K2's inner dimension but disagrees on section size. B matches the section size but gives an outer diameter, not the requested inner reading. The visible number 20 appears on different dimensions, so B cannot be accepted on a simple number match.",
    "failureModes": [
      "Equating outer and inner diameter",
      "Ignoring section diameter after an inner match"
    ],
    "fields": [
      [
        "dimension_type",
        "Names the geometry each number measures"
      ],
      [
        "section_diameter",
        "Tracks the cross-section independently"
      ],
      [
        "observed_unit",
        "Keeps readings on a stated scale"
      ]
    ],
    "holdout": "Supply a noncircular cross-section with a single width measurement; require a second axis or documented convention before comparing.",
    "boundary": "No actual equipment tolerances, safety-critical seal selection, customer specifications or product claims."
  }
}