---
publication_id: "OT-2026-000001292"
title: "Seal removal jig, seal removal method, and seal portion"
published_at: "2026-09-15T19:04:42.943580Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000001292"
categories:
  - "manufacturing-assembly-equipment/assembly-systems"
keywords:
  - "b23p19/047"
  - "b23p19/047"
  - "f04d17/122"
  - "b23p19/04"
  - "b25b27/0028"
  - "f04d29/162"
---

# Seal removal jig, seal removal method, and seal portion

## 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.