{
  "abstract": "A seal removal jig is used for removing a seal portion from a casing of a rotary machine. The seal removal jig includes a jig body pushed up from below in a vertical direction by a jack, and a jig fixing portion that detachably fixes the jig body to an end surface of the seal portion. The jig body includes a jig contact portion that is contactable with an end surface of an upper half seal portion or a lower half seal portion in a circumferential direction about an axis of the rotary machine; and a jig protrusion protruding outward in a radial direction with respect to the jig contact portion and pushed up from below in the vertical direction by the jack. The ratio of a first distance to an outside diameter of the upper half seal portion or the lower half seal portion is 0.01 or more and 0.1 or less.",
  "assignees": [
    "MITSUBISHI HEAVY IND COMPRESSOR CORP"
  ],
  "authors": [
    "KONO YOSHIKUNI",
    "KOYANAGI JUN",
    "OKA HIROAKI"
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  "published_at": "2026-09-15T19:04:42.943580Z",
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  "source_date": "2026-03-31",
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  "title": "Seal removal jig, seal removal method, and seal portion",
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