Hydrogen

Sealing solutions for the hydrogen industry

Hydrogen is essential for more sustainable energy - both as a fuel and for storage of surplus renewables - but its extremely small molecule and conditions of use make it difficult to seal.

At Epidor we develop hydrogen sealing solutions that guarantee safety, reliability and regulatory compliance along the entire value chain.

Flange gaskets of a hydrogen system with seals

Sealing applications in the hydrogen industry

We are manufacturers and suppliers of sealing solutions capable of working in demanding conditions, from production to storage, compression, distribution and use of hydrogen. We offer products for critical applications such as:

Electrolyzers and fuel cells:

precision seals (PEEK, PTFE with fillers) to minimize leakage and preserve gas purity.

Hydrogen compressors (350-900 bar):

gaskets capable of working in dry and wet environments, single/tandem/double configurations, with materials resistant to hydrogen embrittlement.

Valves and connectors:

graphite packings and compatible sealants to prevent fugitive emissions and vibration loosening.

Flanges and critical joints:

very low leakage rate seals (Revoseal), suitable for cryogenic and high pressures.

Pumps and auxiliary equipment:

sealing solutions for process fluids and cooling circuits

Technical characteristics of hydrogen sealing products

Epidor's experience in sealing is translated into components validated in real conditions typical of hydrogen for energy, power generation, off-highway, truck/bus, chemical, aerospace and marine:

Resistance to permeation and fugitive emissions:

optimized designs and materials to minimize gas and cryogenic leakage.

Compatibility with extreme pressure and temperature:

from cryogenic (~-253 °C) to high pressures (350-700 bar).

RGD (Rapid Gas Decompression):

elastomers and designs prepared for rapid decompression.

Hydrogen embrittlement (H-embrittlement):

selection of metals and processes that mitigate the phenomenon.

Validation and quality:

products aligned with international standards and tested according to demanding internal protocols.

Key regulations and standards

We work aligned with references such as ISO 19880-1 (H₂ stations), ISO 17268 (connections for hydrogen gas), ISO 15848-1 (fugitive emissions) and ASME B31.12 (hydrogen lines), in addition to ASME B16.x for flanges and gaskets.

Recommended materials

Elastomers

FPM
NBR
H-NBR
FFPM
FEPM (Aflas®)
EPDM
VMQ
IIR
...

Technical plastics

PTFE with fillers (e.g., Gylon®, Novaflon®)
PEEK
UHMW-PE
POM
PA
TPU's
...

Metals

Austenitic stainless steels (AISI 316/310)
Copper/aluminum alloys to reduce the risk of embrittlement
...

Advanced designs

Spring energized joints
Compact designs
Metal-plastic gaskets
...

Compressed fibers

Novapress
Novatec®
Novaone
Blue-Gard® Blue-Gard
Gloster-Press® Gloster-Press® Gloster-Press® Gloster-Press® Gloster-Press
...

Graphites

Novaphit®
Graph-Lock®
...

Mica

Novamica®
...

Epidor's commitment to the hydrogen sector

Epidor's commitment is to support companies in the safe and efficient implementation of hydrogen solutions, ensuring tightness in all phases of the process.
With more than 70 years of experience in watertightness, we offer a personalized technical advice service, approved products and the possibility of manufacturing customized gaskets according to the needs of each project.

Frequently asked questions about sealing solutions for the hydrogen industry

What applications for the hydrogen sector do Epidor's solutions cover?

We offer gaskets and seals for electrolyzers, fuel cells, compressors, valves and hydrogen storage and distribution systems, both in cryogenic and high pressure conditions.

Why does hydrogen require specific sealing solutions?

Its extremely small molecule favors permeation and leakage. In addition, it is highly flammable and can cause embrittlement in metals, which requires adapted materials and designs.

What standards do Epidor hydrogen seals and gaskets meet?

Our products are aligned with international standards such as ISO 19880-1, ISO 17268 or ASME B31.12, guaranteeing safety and reliability in critical installations.

Does Epidor offer technical support in hydrogen projects?

Yes, our engineering team collaborates in material selection, seal design and test bench validation to ensure maximum safety and efficiency in every application.