As of April 16, 2024, the KLINGER Group is pleased to announce the acquisition of DIUNIS Wilhelm Gรคrtner GmbH Stanztechnik, a specialized volume cutting company based in Wuppertal, Germany. DIUNIS is known for its expertise in manufacturing small, non-metallic gaskets. This acquisition is a strategic extension of KLINGER’s current product range and marks a significant step in the companyโs expansion efforts.
Contacts mentioned in the article:
Christoph Klinger-Lohr, CEO of KLINGER Group
Norbert Weimer, Business Unit Manager Sheet Material at KLINGER Germany

Continuity of the KLINGER Group
Founded in 1922 as a technical wholesale business, it was acquired by the Bauerfeld family in a management buy-out in 1977. Guido Bauerfeld, former owner of DIUNIS, expressed his approval of the acquisition:

โWe are pleased to hand the company over into safe hands, seeing the continuity of the KLINGER Group as a good home for the further growth of DIUNIS.โ
For more than 40 years, Guido Bauerfeld had steered the companyโs fortunes.
Quality products for more than 80 years
As a specialized manufacturer of non-metallic gaskets, DIUNIS has been making everything from standard round gaskets to geometric forms according to customersโ designs for more than 80 years. The companyโs range of standard products includes gaskets for:
- Water flow meter connectors, ยพโ โ 1 ยฝโ
- Gas meter connectors according to DIN 3376 T 1, two-nozzle, ยพโ โ 2โ
- Gas meter connectors according to DIN 3376 T 2, single-nozzle, DN25 โ DN50
- Connections/fittings and gas pressure regulators 1/8โณ โ 2โณ
- Gas shut-off valves according to DIN 3258, 3/8โ โ 1 ยผโ

DIUNIS has a large product range that comprises standard gaskets as well as intricate shapes cut to customer drawings and made of rubber or asbestos-free fiber materials, including:
- Union end flat seat O-rings
- Bonnet seals
- Adapter gaskets
- Casing gaskets
- Distributor gaskets
- Gas meter gaskets
- Water flow meter gaskets
- Single nozzle gaskets
- Cover gaskets
- Housing gaskets
- Valve seals
- Radiator gaskets
- Heating seals

New management for DIUNIS
As part of the acquisition, Norbert Weimer will assume management responsibilities for DIUNIS, ensuring continuity and a focused strategic direction. KLINGER Group CEO, Christoph Klinger-Lohr, remarked, “This acquisition ties in well with our portfolio, significantly enhancing our market offerings. It not only strengthens KLINGER’s ability to serve a wider array of industrial needs but also reaffirms the company’s commitment to growth and excellence in the global market.โ
