About us

About us

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DMH 'On the Premises' - Videotour DMH Dichtungs- und Maschinenhandel GmbH is a global company with its headquarters located in Traboch, Austria. DMH manufactures CNC lathe machines for turning seals, semi-finished materials as well as machined seals.


In 1990, DMH was founded as a family business in Trofaiach, Austria. Since then, the company has been managed and owned by the family Hochfellner. The management consists of Mr Andreas Hochfellner senior, his wife Ms Andrea Hochfellner and his sons Andreas Hochfellner junior and Ing. Rene Hochfellner, MBA.

Due to increasing success of the company and establishment of the DMH SYSTEM in 1997, as well as growing number of employees, in 2001, the company was relocated to Traboch, Austria. In 2012, the company opened a modern PU casting production hall and also extended its storage areas with the seventh and currently last construction phase in Traboch.

Not only the premises have increased to over 10,000 m², the number of employees has also increased from 3 people in the first year, to more than 135 employees until now. We are proud that so many people have joined the family DMH, making the continued success of our business possible. In addition to our dedicated employees, we also attribute our success (turnover in 2012: 18.2 million Euros) to our products and partners.


The DMH SYSTEM is an all-in-one resource, starting from the customer’s requirement right up to the final seal – fast and simple.

This interaction of these individual components in combination with the in-house resources makes this success possible. The DMH SYSTEM is composed of the following segments:

  • DMH machines
  • DMH semi-finished materials
  • DMH seals

For our DMH customers, we offer continually developed software solutions, all tools you need to operate our DMH machines as well as a comprehensive service and training program by our highly qualified technicians.

The production of over 50 different semi-finished materials is completed by our in-house laboratory and the quality department. DMH is committed to continuously improve the quality and to make new developments for our customers.

DMH offers its customers approx. 140 standard profiles as well as special seals and assistance in the field of application technology. Through our in-house manufacturing facility in the seals department, DMH customers can extend their product range and offer their customers seals up to an outside diameter of 2.5 m.

Our corporate policy can be downloaded under the following link.

In addition to our corporate policy, our Code of Conduct serves as our guiding principle in all our decisions and activities. Our current Code of Conduct can be viewed at the following link.

Hide Show Partners around the world

DMH International



Representative office in China
Mr. Riff Lee

Unit 12, 3rd Floor, Section 4
No.186 West Road, 4th Ring,
South, Fengtai District

E-Mail: ly@dmhchina.com
Tel:  +86 185 11 02 16 32



Representative office in Russia
Mrs. Julia Malysheva
b.1, 26, Konjushkovskaya str.
123242, Moscow

E-Mail: dmh_russ@mail.ru
Tel:  +7 (495)999-80-65
Fax: +7 (499) 255-97-56
Mobile: +7 985 9998065


Official DMH partners

DMH has business partners around the world, they can provide you the same support as the help you can get from DMH Austria directly.


4910 Commerce Parkway
Warrensville Heights
OH 44128, USA 

E-Mail: peterholzer@dmh-usa.com
Web: www.dmh-usa.com
Tel:  +1 (216) 292-9600
Fax: +1 (216) 292-9611



LiderSeal Internacional
Rua do Olival, lote 213
2685 Camarate

E-Mail: ana.paula@liderseal.com
Tel: +351 (219) 487-33
Fax: +351 (219) 487-332


JNW Elastomers Pty Ltd
252 Stanbrough Road
4154 Gumdale / Qld.

E-Mail: jnw@bigpond.net.au
Tel: +61 (73890) 1967
Fax: +61 (73890) 1968


Seal Master Asia Pacific Ltd.
1st Floor, 361 Reclamation Street,
Hong Kong

E-Mail:  riff.lee@dmh.at 
Tel: +86 (10) 68945016
Fax: +86 (10) 88580919

 YKT Logo

5-7-5, Yoyogi, Shibuya-Ku
151-8567, Tokyo

E-Mail: ykt110@ykt.co.jp
Tel: +81 3-3467-1270
Fax: +81 3-6368-4617

























Hide Show Future Prospects

"The best way to predict the future is to invent it." ALAN KAY

The increased pressure to become ever faster and better happens not only to us, also our partners and customers are affected. These trends are expected to continue and will still change the world and therefore also our seals business. Our system meets the ravages of time, because every shutdown of a machine must be kept as short as possible – exactly that enables the DMH SYSTEM!

For this very reason, it is our aim to improve and expand our product range constantly, to be one step ahead of these trends, so that we can offer our partners fast and simple solutions!

Environment / Sustainability

As a family business, DMH is not only obligated to their partners and employees, also environment protection and sustainability play a major role. Without doubt this is not a particularly easy task within our industry sector. For this reason, DMH sees it as its duty to improve all products and processes constantly. Our interest is to use our resources in a rational manner to make a contribution to protect the environment.

With these thoughts in mind, DMH undergoes REGLOGO_FA_DEU.jpgthe periodic inspections on occasion of the certification of ISO 9001:2015. Therefore we have not only an assessment of our efforts from outside, it also offers our partners the possibility to measure and compare our efforts, which often exceed the ISO standards.


DMH has been certified according to DIEN ISO 900for over 8 years!

Social surroundings / occupational safety

DMH takes care of its employees and ensures that they get the best possible protection. For this reason our employees not only get sufficient resources for theirs jobs, but also we pay attention to a professional, safety-related all standards complying clothing, so that all employees are well protected in their jobs.

Continuous training for our safety representatives, providing of first aid courses as well as the obligatory medical examinations are top priorities for DMH.

Besides these obligatory measures, DMH always offers its employees the opportunity to attend free fitness programs such as yoga courses. DMH is dedicated to make a contribution towards the health of its employees.