Cellular Rubber

Cellular rubber is a closed-cell rubber quality, which is produced in various strengths and densities using the expansion process. We at PANA stock cell rubber grades based on EPDM, CR, NBR, SBR and NR and thus cover a wide range of applications.

Due to its closed cell structure, the foam is air- and watertight even without an outer skin. Cellular rubber is often incorrectly referred to as sponge rubber.


Due to its closed cell structure, cellular rubber is not only particularly well suited for sealing, but with its excellent recovery properties, also in applications with high mechanical loads. In addition, cellular rubber has good oil, ozone and UV resistance.

In addition to the above-mentioned properties, cellular rubbers of certain thicknesses already fulfil some specifications and standards, such as UL certification, FMVSS or even some other automotive-specific requirements. In order to cover a wide range of applications and industries, we process not only pure EPDM, EVM, CR and NBR types, but also so-called mixed types of CR/NBR and semi-closed materials such as NITTO®.


Our benefits

  • Large selection of different cellular rubber types in stock

  • Also available in rolls from our own production

  • Customised production (purely order-based production)

  • Supplied in various presentations: as sheets, strips, cut parts, die-cut, self-adhesive if required

  • Available in thicknesses from 1mm

Thorsten Klein

Your expert for Cellular rubber:
Thorsten Klein

Phone: +49 (0) 8171/ 9341-12

Mail: thorsten.klein@panafoamtec.de

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You need further support or have a question about our products? Then please feel free to contact us. If you have further technical information about your request, please use our product request form.

Properties per material base:

EPDM cellular rubber:

  • High resistance to external influences such as ozone, light and water
  • Good resistance to acids and alkalis as well as high tensile strength
  • have a wide temperature application range. They are still very flexible even when cold and can withstand a maximum temperature of up to 130°C under continuous load
  • economical

CR cellular rubber (chlorprene or neoprene):

  • has its strength in fire resistance (usually self-extinguishing)
  • Resistant to many different chemicals, also to salt water
  • Good ageing resistance

NBR cellular rubber:

  • Particularly good resistance to oils and fuels
  • High abrasion resistance and very durable
  • Low compression set, i.e. well suited if the material is regularly subjected to mechanical stresses

NR cell rubber:

  • Optimal for requirements of tensile strength, tear strength, elongation and flexibility at low temperatures only
  • Similar to NBR, NR has a good compression set

Semi-closed cellular rubber types (usually EPDM-based):

  • Compared to the closed-cell types, these can be compressed with significantly less force
  • Above a certain level of compression, the materials nevertheless seal

Below you will find an extract from our product portfolio.
If the desired quality or color is not listed, we will be happy to check our sourcing options.

Technical product table cellular rubber:

EPDM-SW 75 kg/m³ 10-25 super soft
EPDM II 130 kg/m³ 30-50 Standard
EPDM I 175 kg/m³ 30-50 Standard
EPDM Grau 140 kg/m³ 40-55 Standard
EPDM Hell/Beige 140 kg/m³ 40-55 Standard
EVM 377 kg/m³ 50-55 Low fogging, self-extinguishing, halogen - and sulphur-free
CR22 175 kg/m³ 40-55 UL certified, good oil resistance
NBR 150 kg/m³ 40-55 Standard
CN-UL 150 kg/m³ 15-45 UL certified, very good oil and ozone resistance
EPDM-S 125 kg/m³ 30-50 Sulphur-free
EPDM-HT 175 kg/m³ 40-50 High temperature resistant
Nitto® EE 1000 / 1010 95 kg/m³ Semi-closed cell structure, low compression load, very good sealing properties; 1010 already self-adhesive.
Nitto® 6800 / 6801 120 kg/m³ Closed cell structure, very good sealing properties, very good heat and weather resistance; 6801 already equipped with self-adhesive.

Not found the right foams for your application?

Frequently asked questions about cellular rubber:

Cellular rubber is foamed (expanded) from natural or synthetic rubber and vulcanised.

Due to its closed cell structure, this material is impermeable to water and air. Due to its robustness and this cell structure, the material is perfectly suited as a seal, for unfolding and insulating.

Cellular rubber is inherently subject to a natural shrinkage of up to 5%. This is usually due to the moisture contained in the material.

To keep this effect as low as possible, our qualities are cured before processing. This enables us to limit shrinkage as much as possible.

Sponge rubber has a mixed-cell structure with predominantly open cells and a dense outer skin. Cellular rubber, on the other hand, has a closed-cell structure without an outer skin.

At PANA, we stock cellular rubber grades based on EPDM, CR, NBR, SBR and NR and thus cover a wide range of applications..

Due to its closed cell structure, cellular rubber can be processed in many different ways.
For Example:

and many more.