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Title: mirro s-9891 gasket
Review: i also ordered this gasket and it was the correct model for my cooker.The first time I used it, it would not hold the pressure. I then carefully pressed the gasket into the lid, making sure that it was not me inserting it incorrectly. This time it held pressure for about 5 minutes and then blew out.Called several companies that sell mirro gaskets. They all had the same model. I think that the old gasket I had for years was a little wider and fit in the rim better. I am now using my old gasket, hope it holds out a little longer.
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