It is mainly used in electrical, lighting and construction sectors. EPDM sponge sheets, natural rubber or coppery based. It is manufactured by molding and extrusion. Its weight is very low. It is resistant to ultraviolet rays and 120 ° C heat in the atmosphere. Its waterproofing capacity is about 1.5%. It is ideal for water and sound insulation since it has a closed cell. It is square, rectangular or circle section in various sizes. It is 1000x2000 mm. If desired, a gluing band may also be added to provide surface adhesion.