Our rectangular sponge rubber profiles are perfectly suited for the use of sealing.
- packaging industry
- air conditioning and filter technology
- Tanks and plant construction
- Machinery and equipment construction
Sponge rubber characteristics
Sponge rubber has a predominantly open-cell structure.
It occupies a special position within the cell elastomers because during its deformation no mass expansion takes place due to open pores.
Sponge rubber is gas and liquid resistent due to its shaping skin.
Our sponge rubber profiles have a high pressure elasticity combined with a particularly good resilience and open- heated and continously vulcanised through a salt bath or microwave hot air.
Even under light pressure, the profile immediately adapts firmly to the environment and sealing profiles. Our sponge rubber profiles are manufactured from high-quality raw rubber compounds according to specific recipes.
The pressure behaviour of the sponge rubber profile results in the demand for soft profiles for light closing pressures and firmer profiles for stronger pressures. By appropiate mixtures and changes of the specific weight (density) we can influence the softnss and compressibility of the sponge rubber profiles make our sponge rubber a perfect sealing and damping material.
we produce a soft sponge rubber quality (04) and a harder quality (06). Other qualities or special qualities can be produced on request. Excellent elasticity and special resilience make our sponge rubber a perfect sealing and damping material.
All cellular rubber profiles have a closed outer skin and are cellular inside.
The uncured mixture consists of raw rubber and chemicals (e.g. a blowing agent, filler and oil). During vulcanisation, the blowing agent inflates the compound and gives the rubber its permanent elasticity.
By using appopriate mouth pieces, sponge rubber profiles with a wide variety of cross-sections can be produced. The profiles are subject to tolerances according to DIN ISO 3302-1- class E 3 ! E 4 available on request!
For many assembly works with sponge rubber sealings self-adhesive coating is needed. We supply sponge rubber profiles with self-adhesive equipment as an assembly aid and as reinforced bonding by means of special heat treatment.
Lengths – Frames- Rings
Sponge rubber profiles are supplied in fixed lengths- in rolls, on spools or packed in bundles. The delivery length is generally 25 m , with large- volume profiles correspondingly less. we also supply sponge rubber profiles in any desired length ready for installation, even in the smallest sections. Larger glued rings and rectangular frames are glued together at our in-house production from sponge rubber profiles in a durable and clean way using AP- Cynacrylate glue. This is a proven and inexpensive solution for sealing large openings in containers, housings, etc. because no large investments in tools are required.
All foam rubber profiles are usually supplied in black – similar to RAL7021. Special colours such as light grey or beige are partly possible on request.
The quality of special profiles is also adapted to their intended use.
The EDPM quality is especially adjusted to ozone and high weather resistance and is therefore mostly used,
There is also a nitrile quality/ NBR or CR for certain demands on resistance to mineral oils and some hydrocarbons.
CR- chloroprene rubber
high flame retardance, good resistance to ozone, weathering, chemicals and ageing
NBR- Acrylonitrile Butadiene Rubber
good resistance to petrol, mineral oils and greases
EPDM- Ethylene-propylene-diene rubber
high resistance to ageing and ozone, good resistance to heat and chemicals
Fire protection compliant special qualities or FDA qualities on request.
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