Manhole seal
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How can the door of a bucket elevator be sealed properly? It needs to be opened frequently, so a simple and quick solution is required. What measures can be taken to ensure good sealing due to the high level of dust? It would be best to provide a picture!
If the temperature is high, use asbestos pads; if not, use polytetrafluoroethylene. To seal it, the only option is to add gaskets, right?