Polyethylene foams have a fine cell structure and have excellent damping, insulating and insulating properties. They have a low density and excellent resistance to weathering and ageing. They also have very fine pores and are resistant to moisture. They are frequently used in thermal insulation (heat and cold insulation), external sealing, relief, support, backfilling, etc. However, they are also used in the field of seals and packaging in applications without significant mechanical or permanent load effects.
Polyurethane foams are very light, durable and reversibly deformable. Even after years of daily use, they do not lose their elasticity. They have large pores so that the air can circulate well - heat and moisture cannot accumulate. PU/PUR foams are often used as seals, rattle protection, filter material or for thermal insulation and are used in the automotive, construction, industrial, medical and orthopedic technology, electronics and many other sectors.
Ethylene propylene diene rubber is a synthetic rubber. It has no outer skin and a closed cell structure. Since the cells are not interconnected, EPDM also has high weather and moisture resistance, good ozone resistance and high thermal stability. It is resistant to oxygen and dilute acids. EPDM has a high elasticity and is used for a wide variety of seals. It is also suitable for use with hot water and hot air up to 150°C. This makes EPDM an optimal material for the production of hoses and seals for household appliances such as washing machines or dishwashers. In terms of volume, it is the most commonly used sealing material in the automotive industry - but it is also increasingly finding its way into the construction sector.
Silicone foams have a high chemical and physical resistance and a very good compression set. They are available in densities from 0.25 to 1.0 g/cm³. They are available as open-cell, closed-cell or mixed-cell foams and are often used for gaskets with high compressibility for damping and insulation or for absorbing tolerances.