Polyurethane Gaskets - Polyethylene Foam Gaskets
Polyurethane & Polyethylene Foam Gaskets. There are primarily two different types of foam, with a number of subsets under these two categories. Polyurethane foam is a softer, open-cell foam that allows air and liquid to penetrate through the foam. Polyethylene foam is a more firm closed-cell foam that is more dense and rigid.
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