Success stories


Development of a customised TEPRO® bracket for HAFEX fire extinguishers


umlaut and Böllhoff ensure safety –
also above the clouds

The umlaut AG, which is located in Hamburg, assembles their halon‑free HAFEX fire extinguishers with an individually developed TEPRO® bracket.

The global full‑service company umlaut AG offers technological and organisational consulting and implementation services – e.g. for the international aerospace industry.

Initial situation


HAFEX – the halon‑free fire extinguisher

Since the 1960s, the gas halon has been used in portable handheld fire extinguishers. Following the classification of halon as a CFC gas, which leads to a depletion of the ozone layer, the use of halon fire extinguishers has been banned throughout the EU since 2004. This was also the specification of the International Civil Aircraft Organisation (ICAO) and the European Union Aviation Safety Agency (EASA): Since mid 2019, all new registered wide‑body aircrafts have to be equipped with eco‑friendly fire extinguishers and all remaining ones required to retrofit by 2025.

That was motivation enough for the well‑known player umlaut to plan a halon‑free alternative. HAFEX came into existence, the smallest, lightest and most flexible, eco‑friendly fire extinguisher for aircraft cabins.

Moreover, it should also be flexible to install. In order to use it on existing mounting points of typical halon fire extinguisher in all civil aircraft types, it was therefore created as a drop‑in alternative. This considers different mounting types of all large aircraft producers. In some aircraft types, the drop‑in insert is not needed directly, since the current brackets are sufficient.

For deliveries of fire extinguishers, e.g. in the United States, it is mandatory to always include a bracket in the sending. This law is defined by the American organisation Underwriters Laboratories, who certifies products regarding their safety. However, the previously used brackets were heavy and made of metal screws covered with rubber, which were screwed together in a complicated way.

Customer profile

Technological and organisational consulting and implementation services

Hamburg, Germany




TEPRO® – customised engineering plastic products and subassemblies

Continuing the HAFEX success story, a new bracket should be realised. It had to be extremely robust, easy to assemble, lightweight and furthermore a compatible part of the whole HAFEX packaging. This was the optimal time to talk with Böllhoff, the expert for joining technology. The company from Hamburg discovered quickly the great potential of the Böllhoff product group TEPRO® for their own project.



Highly stressable and weight‑reduced

Böllhoff and umlaut worked closely together in order to create a new individual bracket. Whether shape, colour or function – every customer request was taken into account during the development. For an efficient bracket production, the injection moulding process was optimised and every activity in the project closely supported.

The new developed, one‑piece TEPRO® plastic bracket is highly stressable, recyclable and weight‑reduced. 5,000 pieces per year will be delivered to Hamburg in the future and ensure together with the HAFEX fire extinguisher your safety.

Customer benefits

  • Focus on individual customer benefits
  • In-house development, design, prototype manufacture
  • Own tool making
  • Expertise in material and injection moulding
  • Accredited laboratory


Find out more: related downloads.

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Title Language Version File Download
Success story
umlaut and Böllhoff ensure safety – also above the clouds
English 11/2020 1081 kB / PDF
English 11/2020 1081 kb / PDF
Engineering plastic products and subassemblies
English 4720/16.02 1617 kB / PDF
English 4720/16.02 1617 kb / PDF

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