As we all know, rubber products are often used in a compressed state, so compression resistance is one of the main properties that affect product quality. Rubber compression resistance is generally measured by compression permanent deformation.

When rubber is in a compressed state, physical and chemical changes will inevitably occur. When the compression force disappears, these changes prevent the rubber from returning to its original state, thus causing compression permanent deformation. The size of the compression permanent deformation depends on the temperature and time of the compressed state, as well as the temperature and time when the height is restored.

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