| 摘要 |
PURPOSE: A sealing testing device is provided to accurately and conveniently test the failure of a leakage prevention guide before assembling the guide. CONSTITUTION: A sealing testing device comprises a test shaft(110), a hub unit(120), a gas supply unit(130), and a leakage sensing unit(140). The test shaft is formed into a shape identical to a piston shaft for accurately simulating a mounting state of a leakage prevention guide in a leakage test. The hub unit is mounted to the leakage prevention guide and the test shaft. A gas injection space is formed between the test shaft and the leakage prevention guide. The gas supply unit supplies gas to the gas injection space at set pressure. The leakage sensing unit senses the gas leaked through a gap between the test shaft and leakage prevention guide.
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