
Manufacturer of high-temperature seals made of graphite and carbon, plus contract manufacturing by precision waterjet cutting

KLINGER Bartsch GmbH
Wallenhorst (Hullerweg 20) · Wallenhorst (Lise-Meitner-Straße)New on Amplifa
About KLINGER Bartsch
KLINGER Bartsch GmbH, based in Wallenhorst near Osnabrück, has been developing and manufacturing seals made of graphite and carbon as well as derived products since 1973. The product range includes custom-made pure graphite rings in a wide variety of dimensions and machining variants such as flanging, mechanical seal rings, flat seals made from SIGRAFLEX films and sheets, carbon products for seals and bearings, as well as PTFE-based, fiber-reinforced and laminate sealing materials from the KLINGER program. As a second mainstay, the company has operated waterjet technology since 1998 with four systems that cut metal, plastic, stone, glass, ceramics and composite materials 16 hours a day using pure waterjet and abrasive processes. Depending on the material, sheet thicknesses of 0.5 to 200 mm are cut; the support surfaces extend up to 4255 x 4145 mm. The seals are produced from one-off pieces to series runs of millions of units; more than 18,500 tools are available for pure graphite rings. Only seal manufacturers and technical distributors are supplied; individual sectors include chemicals and petrochemicals, power plant engineering, plant and mechanical engineering, and valve manufacturing. The company belongs to the internationally active KLINGER Group and is certified to ISO 9001:2015 and ISO 14001:2015.
- Site
- Wallenhorst
- Processes
- Waterjet cutting (pure waterjet), Waterjet cutting (abrasive cutting), Waterjet cutting of steel, Waterjet cutting of aluminum, Waterjet cutting of stainless steel, Waterjet cutting of copper/brass/bronze, Waterjet cutting of plastics, Manufacture of seals made of graphite and carbon (pure graphite rings, mechanical seals,
- Materials
- St37 / S235, St52 / S355, 42CrMo4, 16MnCr5, COR-TEN (weathering steel), Stainless steel, AlMg3, AlMg4,5Mn
- Certificates
- ISO 9001:2015, ISO 14001:2015, ISO 9001, ISO 14001
- Founded
- 1973
- Industries
- Sealing technology, Plant engineering, Vessel construction, Mechanical engineering, Railing construction, Chemical industry
- 01
On-site consultation / production consulting
- 02
Material procurement and warehousing
- 03
Waterjet cutting (pure waterjet and abrasive)
- 04
Manufacturing of graphite and carbon seals
- 05
Quality assessment
- 06
Further processing by regional partners (cleaning, greasing, labeling)
- 07
Logistics and worldwide delivery
Sites

Wallenhorst (Techno-Point, Hullerweg 20)
DEHeadquarters and seal technology production
- Lot size
- One-off pieces to series of millions
- Materials
- Graphite, carbon, SIGRAFLEX, PTFE, KLINGERSIL, graphite and mica laminates
- > 18,500 tools for pure graphite rings
- Tools for individual mechanical seal components

Wallenhorst (Lise-Meitner-Straße)
DEWaterjet technology
- Part weight / size
- Sheets up to approx. 4255 x 4145 mm support surface
- Lot size
- Lot size 1 to series
- Materials
- Steel, stainless steel, aluminum, copper, brass, bronze, plastic, ceramics, glass, stone, rubber, composites
- Waterjet cutting system, support surface 4100 x 2000 mm, 1 cutting head with rotary axis
- Waterjet cutting system, support surface 4000 x 2000 mm, 1–4 cutting heads
- Waterjet cutting system, support surface 4200 x 3080 mm, 1–4 cutting heads
- Waterjet cutting system, support surface 4255 x 4145 mm, 1–4 cutting heads
Components



Inside the production




Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Waterjet cutting (pure waterjet)Machining | – | 4200 mm × 3080 mm | – | Lot size 1 – Series | Plastics, films, foams, paper |
| Waterjet cutting (abrasive cutting)Machining | – | 4255 mm × 4145 mm | – | Lot size 1 – Series | Steel, stainless steel, aluminum, copper, brass, bronze, ceramics, glass, composite materials, stone, marble, rubber |
| Waterjet cutting of steelMachining | – | – | – | – | Steel St37/S235/1.0037, St52/S355/1.0577, 42CrMo4/1.7225, 16MnCr5/1.7131, COR-TEN |
| Waterjet cutting of aluminumMachining | – | – | 1 mm (thickness) – 200 mm (thickness) | – | AlMg3/EN AW 5754, AlMg4,5Mn/EN AW 5083, AlMgSi1/EN AW 6082, AlCuMg1/EN AW 2017, AlZnMgCu1,5/EN AW 7075 |
| Waterjet cutting of stainless steelMachining | – | – | 0.5 mm (thickness) – 100 mm (thickness) | – | 1.4301, 1.4541, 1.4404, 1.4571 |
| Waterjet cutting of copper/brass/bronzeMachining | – | – | 1 mm (thickness) – 80 mm (thickness) | – | SF-Cu/Cu-DHP/2.0090, E-Cu/Cu-ETP/2.0060, CuZn37/2.0321, CuZn39Pb2/2.0380, CuSn6/2.1020 |
| Waterjet cutting of plasticsMachining | – | – | 0.5 mm (thickness) – 200 mm (thickness) | – | PE, PP, PVC, PS, PET, POM, PA, PC, PTFE, PMMA, PETG |
| Manufacture of seals made of graphite and carbon (pure graphite rings, mechanical seals,Plastics | – | – | – | Lot size 1 – Series of millions | Graphite, carbon, SIGRAFLEX films/sheets, PTFE, KLINGERSIL, graphite laminates, mica laminates |
| Flanging / further machining variants of graphite ringsForming | – | – | – | – | Pure graphite |
| Repair of (special) sealsAssembly | – | – | – | – | Graphite, carbon |
| Quality assessment / on-site consultation / product approvalsTesting | – | – | – | – | – |
4 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Waterjet cutting system (1 cutting head, with rotary axis) | – | 1 | Support surface 4100x2000 mm | – | Wallenhorst |
| Waterjet cutting system (1–4 cutting heads) | – | 1 | Support surface 4000x2000 mm | – | Wallenhorst |
| Waterjet cutting system (1–4 cutting heads) | – | 1 | Support surface 4200x3080 mm | – | Wallenhorst |
| Waterjet cutting system (1–4 cutting heads) | – | 1 | Support surface 4255x4145 mm | – | Wallenhorst |
Additional services
Reference customers
Quality and Certification
KLINGER Bartsch is certified to DIN EN ISO 9001:2015 and DIN EN ISO 14001:2015 and offers customers the in-house service of a quality assessment. The requirements lie in handling media for which 100% tightness is required.
| Evidence | Wallenhorst |
|---|---|
| ISO 9001 | |
| ISO 14001 |
History
- 1973
Founded as an engineering office by Peter Bartsch in Wallenhorst (sale of pumps and carbon parts); renamed Peter Bartsch GmbH & Co. KG.
- 1980
Split into Bartsch Kohle/Graphitprodukte GmbH & Co. KG and Bartsch Pumpen GmbH & Co. KG.
- 1985
Integration of SUTOS GmbH, a mechanical engineering company in Wallenhorst.
- 1995
Move into the Techno-Point, under whose roof sealing technology, pump technology and mechanical engineering are united.
- 1996
First ISO 9001 certification of all companies in the Techno-Point by TÜV Nord.
- 1998
New building and partial relocation for waterjet cutting to Lise-Meitner-Straße.
- 2000
Sale of the companies (Bartsch Kohle/Graphitprodukte, Interstanz, SUTOS) to KLINGER GmbH; merger to form Bartsch GmbH.
- 2001
Peter Bartsch left the company on 31.12.2001.
- 2003
Re-certification to DIN EN ISO 9000:2000 by TÜV Rheinland at the first attempt.