Westring Dichtungstechnik - Your specialist for technical seals

As a family-run company, we dedicate ourselves entirely to our core competence at three locations: sealing technology. Our technical advice requires a very high level of product knowledge and the experience that comes along with it. We gather this in projects and in active exchange with our customers, in continuous further training and relevant adjustments to market changes, as well as our own test tracks, prototype and mould construction. And this for over 40 years. Now in its 3rd generation. Your Westring sealing technology.


We remain family-run

We want to lead our company successfully into the future and therefore we are pulling together. The change from the second to the third generation is in full swing and everyone benefits from it. Young and old - and also you as our customer.


With commitment into the future

We invest continuously - whether in expanding our stock, in new machines, in updating our website or our IT. Recently, we moved into our new branch in Cologne. Continuous investment is essential for us, because we are and want to remain your preferred partner in sealing technology.

Location Düren
Originally founded in Hürtgenwald (Eifel) in 1976, the headquarters were relocated to neighbouring Düren in 2001.
» To the Düren location

Cologne location
In 1986, the branch was founded in the Rhine city of Cologne. In 2019, investments were made in a new company building.
» to the Cologne location

Location Plauen
founded in 1990, a new, modern company building was built in 2004 after 14 successful years.
» to the Plauen location

A success story for more than 40 years

June 1976

Foundation of Westring Dichtungstechnik by Dipl. Ing. Horst Graßmann and Iris Graßmann, based in the Eifel municipality of Hürtgenwald

July 1983

Construction and occupation of the new warehouse in Hürtgenwald

February 1986

Foundation of the GmbH at the Cologne location by son Klaus Grassmann

May 1986

Move into the new warehouse with integrated office units in Cologne


Foundation of the GmbH at the Plauen location by Horst Grassmann and Sales Manager Jörg Neubauer

May 1996

Business transfer of the Hürtgenwald location to son Marcus Grassmann as sole owner and managing director

September 1998

Introduction of a uniform merchandise management system and thus networking of all three locations

January 2000

Acquisition of the commercial property at the A4/B56 junction in Düren

July 2001

Relocation of the company from Hürtgenwald to the new building in Düren

June 2003

Expansion of the storage area in Cologne by approx. 250m²


New building and move-in of Plauener GmbH into the new building in the Plauen-Zadera industrial estate


Business transfer of the Plauen location from Horst Grassmann to Jörg Neubauer


Expansion of the warehouse and office space by installing an additional floor at the Plauen branch.

September 2016

Purchase of a plot of land in the Cologne-Merkenich industrial estate for the construction of a new building


Acquisition of a further commercial space for prospective business expansion at the Plauen location


Expansion of the machine park for gasket production and acquisition of optical precision measuring technology to expand quality management at the Plauen branch

October 2019

Cologne GmbH moves into the new building in Cologne-Merkenich with 450m² of office space and 670m² of hall space


Building application for the change of use of a further storey level to expand the storage area at the Düren site and certification in accordance with ISO 9001 : 2015 in Plauen

Benefit from our ISO 9001:2015 certification

In order to offer you the best possible service, we are constantly working on improving our in-house processes. You benefit directly from the consistent increase in our process performance. The ISO 9001:2015 certification confirms our efforts in the area of quality management.

Motivation, team spirit and effectiveness

Our defined values also inspire our customers. But what exactly does that mean for you as a customer? Our motivation is to maintain your industrial processes. Through consistent exchange, we act in a solution-oriented manner and help to overcome professional challenges - whether in industry, the design engineer or the service technician. We deliver quickly and efficiently, thanks to more than 50,000 finished quality seals in the warehouses of our three locations. The cooperation between the three locations is constantly analysed and adapted.

You benefit from our cross-house team play and, as a customer, you are part of the team. In other words, it's a bit like sport, take water polo or football for example. The motivation of a team is to win the game. This only works through exchange, combination and the active, independent action of the team members. In this way, solutions emerge that are denied to the individual player alone. Thanks to consistent training, exchange and perseverance, synergies are created that effectively contribute to the next point.

As you can see, sport is very close to our hearts.
We believe that you can learn a lot for the rest of your life by playing sports together during your youth. That's why we support various clubs and sporting events at regional level every year.

Find out more about our commitment and read other interesting news about Westring Dichtungstechnik on our page: "Insights"

Have we aroused your interest? Become part of the Westring team!

At the moment, all positions at Westring Dichtungstechnik are filled. Nevertheless, we would be pleased to receive your speculative application with a meaningful portfolio.
Please send your documents by e-mail (no larger than 10 MB) to: info[at]westring-dichtungstechnik.de.

We look forward to hearing from you!

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