We keep it sealed


For highly efficient turbine performance, it is imperative to reduce leakage of the working fluids while the machine is in operation. The annular interspace between rotating and stationary parts is sealed by labyrinth seal strips. Another effect of the labyrinth seal strips is compression of the fluid by utilizing a staggered layout to impose a circuitous path for the fluids as they pass through the machine. Seal strips are installed in sealing grooves on the component part of the turbine. They are positively fixed in the grooves by specially-shaped caulking wires made of stain, temperature and creep-resistant materials, which are additionally annealed by vacuum or solution techniques. Seal strips and caulking wire are complementary parts for turbine assembly. Neither can be used without the other. PGS designs, manufactures and supplies the complete set of seal strips and caulking wires for a given turbine.

Seal Strips and Caulking Wires for highest demands

Seal Strips and Caulking Wires in turbine service

Seal strips and caulking wire are wear parts which need to be replaced periodically to ensure turbine performance.

This makes seal strip replacement an essential work package in the growing turbine maintenance, repair and overhaul (MRO) market. Turbine service companies requires fast delivery and perfect fit.

PGS is 100% committed to it’s customers and has built it’s reputation by providing capabilities and organization for fast and agile fulfilment of your labyrinth seal requirements.

No matter if you require a complete set for a turbine being manufactured or a single replacement part – We offer perfect fit and on-time delivery with the fastest turnover.

Widest range of deliverable products worldwide

PGS offers the world’s widest range of seal strips and caulking wire materials from stock. Our full product portfolio is immediately available and ready for fulfilment in any quantity. Our certified quality management – in accordance with
DIN EN ISO 9001 – ensures:

  • Traceable raw materials
  • Coordinated processes
  • Stable manufacturing
  • Versatile manufacturing facilities
  • Steady logistics
Our Product Range

Ordered today, delivered tomorrow.

Contact us.

Special shapes or materials

Are you working on a an older or special turbine that requires customized seal strips?

No problem: PGS provides either an upgraded alternative solution or sources required materials, then engineers and manufactures the proper tooling to fulfill any requirement.

German Engineering

In order to manufacture excellent seal strips and caulking wires from certified materials, PGS engineered and built it‘s own state-of-the-art manufacturing equipment. We provide reliability throughout the process from a single source. Seal strips and caulking wires created with German engineering for the global market – high-quality, precise manufacturing and on-time delivery anywhere in the world.







Our Product Range.

Seal Strips


L shape plain

  • Thicknesses 0.25 – 0.8mm
  • Diameters 120 – 6000mm
  • Heights/fins 3 – 20mm
  • stainless steel, brass alloys, aluminum


L shape profiled

  • Thicknesses 0.5/0.25 – 0.6/0.3mm
  • Diameters 120 – 6000mm
  • Heights/fins 3 – 20mm
  • stainless steel


U shape

  • Thicknesses 0.25 – 0.50mm
  • Diameters 110 – 6000mm
  • Heights/fins 3 – 20mm
  • stainless steel


J shape

  • Thicknesses 0.25 – 0.5 mm
  • Diameters 110 – 6000mm
  • Heights/fins 3 – 20mm
  • stainless steel


I shape

  • Thicknesses from 1 – 2.5mm
  • Diameters 200 – 6000mm
  • Heights/fins 3 – 18mm
  • stainless steel and brass alloys


Individual shape

  • Thicknesses 0.25 – 2.5mm
  • Diameters 110 – 6000mm
  • Heights/fins from 3 – 20mm
  • stainless steel, brass alloys, aluminum

Caulking Wires

Large selection of different materials, almost all required dimensions and profiles, e.g. square, flat with rounded edges, special profiles

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Legal Disclosure

Information in accordance with section 5 TMG

Power Generation Seals (PGS) GmbH
Wolfener Str. 32-34 H
12681 Berlin

Represented by

Dipl.-Ing. Mario Hans Hesse


Telephone: +49 (0)30 616 5000 2
E-Mail: wecare@pgs-berlin.de
Internetadresse: www.pgs-berlin.de

Register entry

Entry in Handelsregister
Register Number: HRB 115382 B
Register Court: Amtsgericht Charlottenburg

VAT number

VAT indentification number in accorance with section 27 a of the German VAT act
DE 261592391

Person responsible for content in accordance with 55 Abs. 2 RStV

Dipl.-Ing. Mario Hans Hesse
Indication of source for images and graphics
Power Generation Seals (PGS) GmbH


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