{
  "schema": "piping-hub-clamp-makeup/v1",
  "object_id": "c03-hub-clamp-makeup",
  "geometry": "qualitative upper half axial section; lower half and fasteners omitted",
  "parts": [
    "clamp",
    "hub pair",
    "metallic seal ring",
    "ring rib",
    "ring lips"
  ],
  "states": [
    {
      "state": "free",
      "relationship": "ring positioned between hubs before final closure",
      "specified_clearance": null
    },
    {
      "state": "made_up",
      "relationship": "rib clamped between hub faces; lips engage inner surfaces by interference and deflect"
    }
  ],
  "load_path": [
    "clamp closure",
    "external tapered contact draws hubs together",
    "rib capture between faces",
    "lip engagement at inner hub surfaces"
  ],
  "pressure_response": "internal pressure reinforces mechanically energized seal",
  "limits": [
    "matched actual parts and materials required",
    "no angles, dimensions, ratings, bolt torque or interchangeability established",
    "corrosive dead-flow service and safe intervention require their actual basis"
  ],
  "project_acceptance": false
}