This is a closed cell sponge neoprene. It is primarily used as a cushion and sealing tape against air and moisture. It can also be used as a dust seal for furniture, store fixtures and partitions, noise insulation, padding, expansion joints of precast concrete and steel, vapour barrier for prefab buildings, HVAC and refrigeration, automotive. It is also an excellent door seals for truck and bus bodies, offload equipment and transformer cabinets. More selections available, search for them on Amazon!