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An uncompromising commitment to quality

Safety requires outstanding quality. With a strict, certified quality management, exclusive in-house assembly and carefully chosen suppliers, Gelbau consequently focuses on uncompromising product quality “Made in Germany”.

Man holding rubber material

First-class materials are the basis for the maximised functionality and long life cycles of our products. With the two rubbers NBR and EPDM, Gelbau has opted for materials that make an important contribution to the applicational safety.

Our special-quality rubber

NBR – Nitrile butadiene rubber

Synthetic special-quality rubber with high swell-resistance to fuels, oil, grease and aliphatic solvents. Not recommended in conjunction with aromatic solvents, pure benzene, toluene, and ozone or sunlight exposure.

EPDM – Ethylene propylene diene monomer

Synthetic all-purpose rubber with excellent resistance to aging, ozone, sunlight, weather conditions and other environmental factors as well as alkalis, corona and various dyes and chemicals. Not resistant to hydrocarbon solvents, turpentine or petrol.

  • Internat. abbreviation
  • 40 to 90
    35 to 90
  • up to approx. 20
    up to approx. 20
  • up to approx. 450%
    up to approx. 450%
  • approx. −40 to +150 °C
    approx. −50 to +170 °C
  • approx. −30 to +120 °C
    approx. −30 to +140 °C