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How Do You Shrink An O-Ring? [Solved]
Boiling Water Rubber Shrinkage Pour water into a large pot and set it over high heat on the stove. After the water boils, place the rubber item into the boiling water. If you are shrinking a small object such as a seal, gasket, or o-ring, leave it in the water for one minute before removing it with a pair of tongs.
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