Geberit Mapress Stainless Steel for various gaseous and liquid media
Corrosion-resistant and versatile
Geberit Mapress Stainless Steel is an effective supply system that can be used for lots of different liquid and gaseous (including aggressive) media. Geberit has the highest standards when it comes to manufacturing. The high molybdenum content, for example, ensures especially high corrosion resistance.
Thanks to our wide range of pressfittings and pipe dimensions from d16 to d108 as well as the various seal rings, Geberit can provide solutions not only for technical building systems but for almost all applications, such as solar and industrial plant engineering.

Main applications and areas of use for stainless steel piping systems with excellent corrosion resistance
Geberit Mapress Stainless Steel is suitable for liquid and gaseous media:
Open application overview for liquid media
Open application overview for gaseous media
Geberit Mapress Stainless Steel properties Versatile – for a wide range of applications
Versatile applications in technical building systems and industry
Thanks to our wide range of pipe dimensions from d16 to d108, the product material characteristics of the stainless steel and the various seal rings, Geberit can provide solutions not only for technical building systems but for many other applications in industrial plant engineering.

Suitable for fuel gases
Geberit Mapress Stainless Steel can be used for a wide variety of gas applications. For use with fuel gases, we offer a complete range of pressfittings with yellow HNBR seal ring, yellow mark and yellow protective cap.
The robust Geberit Mapress Stainless Steel piping system can be used for operating pressures up to 25 bar (depending on pipe diameter).

Excellent corrosion resistance
Geberit Mapress Stainless Steel is a reliable piping system suitable for a range of applications. The pipes and pressfittings are made of stainless steel and stand out thanks to their excellent corrosion resistance and hygiene.
Geberit Mapress Stainless Steel is suitable for thermal and chemical disinfection – both if required by directives and regulations or if the supply network is already contaminated.
The optimum composition of the alloy components ensures a high level of material and system reliability. Geberit Mapress stainless steel system pipes and fittings 1.4401 have a minimum molybdenum content of 2.3%, making them incredibly corrosion-resistant.

Geberit Mapress Stainless Steel overview
Facts & figures
Assortment overview
- 11 nominal widths from d12 to d108
- Around 500 fittings and components
- CrNiMo system pipes
- CrMoTi system pipes with green mark
- MasterFix adapter for tool-free, secure screw connections to Geberit sanitary appliances
- Extensive range of adapters and transitions to other systems
Dimensions
Available pipe dimensions
| Nominal width DN | Dimension d x s (mm) | Geberit Mapress Stainless Steel CrNiMo system pipe | Geberit Mapress Stainless Steel CrTiMO system pipe |
|---|---|---|---|
| 10 | 12.0 x 1.0 | ||
| 12 | 15.0 x 1.0 | ||
| 15 | 18.0 x 1.0 | ||
| 20 | 22.0 x 1.2 | ||
| 25 | 28.0 x 1.2 | ||
| 32 | 35.0 x 1.5 | ||
| 40 | 42.0 x 1.5 | ||
| 50 | 54.0 x 1.5 | ||
| 65 | 76.1 x 2.0 | ||
| 80 | 88.9 x 2.0 | ||
| 100 | 108.0 x 2.0 |
Fittings
Available fittings
Geberit Mapress Stainless Steel pressfittings
- CrNiMo stainless steel 1.4401
- Pressing indicator to test if the fittings are pressed correctly
- Blue pressing indicator indicates stainless steel
- Dimension printed on the pressing indicator
- Protective plug prevents fittings from getting dirty
- Non-pressed connections are leaky and immediately identifiable during a pressure test
- More than 500 different fittings are available

Geberit Mapress Stainless Steel, gas
- CrNiMo stainless steel 1.4401
- For use with combustible gases
- Pressing indicator to test if the fittings are pressed correctly
- Blue pressing indicator indicates stainless steel
- Yellow mark on the fitting
- Yellow HNBR seal ring and yellow cap for use with combustible gases
- Available in dimensions d15 to d108

Geberit Mapress Stainless Steel, FKM, blue
- CrNiMo stainless steel 1.4401
- For use with oil-containing media and other special requirements
- Pressing indicator to test if the fittings are pressed correctly
- Blue pressing indicator indicates stainless steel
- Blue FKM seal ring and black cap for use with oil-containing media and other requirements.
- Available in dimensions d12 to d108

Geberit Mapress Stainless Steel, LABS-free
- CrNiMo stainless steel 1.4401
- For use in sensitive applications, e.g. painting facilities
- Pressing indicator to test if the fittings are pressed correctly
- Blue pressing indicator indicates stainless steel
- Black CIIR seal ring
- Pressfittings are packed individually.
- Available in dimensions d15 to d108

Seals
Available seal rings
Geberit offers a comprehensive range of fittings with preinstalled seal rings made of different materials for special applications. This makes installation easier and faster.
Standard O-rings can also be replaced by suitable specific seal rings. Please note the instructions in the application overview.
Open application overview for liquid media
Open application overview for gaseous media

Black CIIR seal ring
Geberit Mapress Stainless Steel and the black CIIR seal ring can be used for the following liquid media:
- Hot and cold drinking water
- Heating water
- Cooling water without antifreeze agent
- Cooling water with antifreeze agent
- District heating water ≤ 120 °C
- Saturated steam ≤ 120 °C
- Service water
- Ultrapure water (except pharmaceutical water)
- Rainwater with a pH value > 6.0
- Grey and black water with a pH value > 6.0
- Extinguishing water (wet)
- Sprinkler (wet)
- Chemicals and technical liquids
And for the following gaseous media:
- Compressed air (oil purity class 0–3)
- Negative pressure
- Inert gases
- Industrial gases

Seal ring FKM, blue
Geberit Mapress Stainless Steel in combination with the blue FKM seal ring stands out thanks to high temperature and chemical resistance.
Can be used for the following liquid media:
- District heating water ≤ 140 °C
- Thermal medium (solar)
- Mineral oils
- Motor fuels
- Chemicals and technical liquids
Can be used for the following gaseous media:
- Compressed air (oil purity class 0–X)
- Industrial gases

Seal ring HNBR, yellow
Geberit Mapress Stainless Steel with the yellow HNBR seal ring can be used for the following fuel gases:
- Natural gases
- Liquefied gases
- Biogases
Geberit Mapress Stainless Steel Gas fittings can be distinguished from other fittings thanks to their yellow mark and yellow protective plug.

Seal ring FKM, white
Geberit Mapress Stainless Steel with the white FKM seal ring is suitable for saturated steam applications up to 155 °C, even in cyclical operation.

System pipes
Available system pipes
Geberit Mapress Stainless Steel system pipe CrNiMo
- Higher molybdenum content ensures stability and maximum protection against corrosion.
- The fittings are also thermally and mechanically treated to create a homogenous, high-quality material structure.
- This special treatment ensures both optimum formability and the required long-term tightness.
- Smooth surfaces ensure that the seal ring fits perfectly and provide optimum hygienic properties.

Geberit Mapress Stainless Steel system pipe CrMoTi (1.4251)
- CrMoTi steel as a cost-effective alternative to conventional product materials in hygienic drinking water installations
- Green line along the pipe helps identification • Green protective plug protects the pipe from particles and dirt

Environmental product declaration
Environmental product declaration (EPD)
Environmental product declarations (EPDs) create transparency and allow products to be compared in terms of their environmental impact.
EPDs are available for Geberit Mapress Stainless Steel pipes and all key fittings:
Installation
A quick guide to installation
Geberit offers a comprehensive range of pressing tools, pressing jaws and collars to install Geberit Mapress pipes and fittings.
Note: The installation process for Geberit Mapress d12 to d88.9 is different to that for Geberit Mapress d108.
Geberit Mapress Stainless Steel product range Articles, technical information and more
Do you have any questions? We are happy to help you.
Our specialists advise planners, plumbers and other professionals on their projects. They will be happy to advise you on how to best master your current challenges with our products.
Frequently asked questions about Geberit Mapress Stainless Steel
What media can I use Geberit Mapress Stainless Steel for?
In addition to drinking water, Geberit Mapress Stainless Steel can be used for a variety of gaseous and liquid media. You can check the chemical resistance of Geberit Mapress Stainless Steel using Geberit PipeSelect.
What are the differences between the 1.4404 and 1.4520/1.4521 pipe materials?
1.4404 (316L): Contains molybdenum for better resistance to pitting corrosion
1.4521 (444): Ferritic with molybdenum for good resistance to chloride and stress cracks
How does Geberit Mapress Stainless Steel perform during thermal disinfection?
Geberit Mapress Stainless Steel is suitable for thermal disinfection and can be used for hygiene-critical applications, including drinking water installations in hospitals, care homes and hotels.
What effect does the high molybdenum content have on Geberit Mapress Stainless Steel?
Above all, the high molybdenum content in Geberit Mapress Stainless Steel (e.g. 1.4401 / AISI 316 material) provides significantly improved corrosion resistance and hygiene.















