Polyethylene foam is in most cases a closed-cell foam and available in different densities between 30-250 kg/m3. Ideally suited as the material for thermal insulation, shock absorbing, vibration damping, acoustic insulation, etc.
Polyethylene foams are available in different colors and thickness. The compressionset is not as good as rubber or high performance polyurethane but often good enough for dustsealing or gapfilling. Polyethylene foam is very good thermoformable and vacuum formable.