Glossary

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Hardness - The resistance to indentation, as measured under specific conditions.

Hole (void) - An unintentional cavity occurring in a cellular rubber product. It is usually circular in appearance, medium to large in size and goes completely through the material.

Hydrophilic - A foam that has an affinity for water or easily absorbs water. A sponge would be an example.

Hydrophobic - A foam that is resistant to water or won’t easily absorb water.

HyPUR-cel® - A family of medium to high density, open cell polyurethane foams manufactured by Rubberlite, Inc. that exhibit excellent resistance to compression set, they are breathable and can be cut to a custom thickness.