Polyethylene foamA closed-cell, expanded, extruded, flexible plastic foam with predictable shock absorbing qualities. Used mainly as a protective packaging material, polyethylene foam is used to wrap products such as computer components, frozen foods, furniture, signs, sporting goods and clothing.Polyurethane foamA resilient foam that is available in multiple densities both as open and closed cell. Typical applications for urethane foam include surgical scrubbers, x-ray positioning pads, EKG pads, insulation foam, protective foam padding, flexible foam seating and custom insulated containers.