Hydrogen Seals for Tanks and Pressure Regulators

EQYO, A Saint Gobain Business

Seals for hydrogen tanks and pressure regulators under extreme conditions
Sealing element required on tank or valve
Low bolting load for easy installation
Leakage rate up to 10⁻⁵ mbar l/sec in helium
Metal seal with axial static face seal and material A-286

Next generation hydrogen seals for extreme conditions. These seals are designed for use in both gaseous (HPH2) and liquid (LH2) hydrogen tanks, offering high pressure resistance up to 1750 bar and extreme temperature tolerance from -250°C to +85°C. They provide very low leakage rates, mechanical resistance, and no permeation or diffusion. The seals are available in both polymer and metal options, with spring-energized designs for dynamic sealing. They are suitable for applications involving tanks, regulators, blowers, and other hydrogen-related systems in mobility.

Use Cases

Sealing element on the tank or on the valve that open/closes it
Type III & IV tanks in automotive applications
Sealing for hydrogen gas in HPH2 tanks
Sealing for liquid hydrogen in LH2 tanks

Capabilities

Radial/Axial Dynamic Seal
Round shape
Polymer material virgin or filled PEEK/PTFE
Spring Material 316SS, Elgiloy
Low bolting load
Leakage rate up to 10⁻⁵ mbar l/sec (cc/sec) in helium
Axial static face seal
Different shapes
Material A-286
Spring energized option: Elgiloy spring
Leakage rates up to 10⁻¹⁰ mbar l/sec(cc/sec) in helium
High pressure up to 1750 bar
Extreme temperatures from -250°C to +85°C
Very low leakage 1.e⁻⁷ cc/sec @6bar
Creep resistant at high temperatures
Wear resistant
No permeation
No diffusion

EQYO, A Saint Gobain Business EQYO specializes in hydrogen-related solutions, including seals for fuel cell electric vehicles and hydrogen injection applications. They focus on cleaner emission technologies and sustainable energy solutions. EQYOs products aim to support the transition to a hydrogen economy.

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