The Unique Physics of Hydrogen Sealing
Hydrogen is the smallest and lightest diatomic molecule in the universe (H2). When pressurized in pipelines and fueling systems, it can permeate conventional elastomers and cause severe hydrogen-induced cracking (HIC) and embrittlement in susceptible steels.
"Designing for pure hydrogen and hydrogen-natural gas blends requires selecting 316L with controlled nickel equivalency or austenitic superalloys to mitigate embrittlement."
Helium Leak Testing as a Hydrogen Surrogate
Because hydrogen and helium exhibit closely matching molecular mass and kinetic diameters, high-sensitivity helium mass spectrometer testing is essential to qualify gasket configurations for hydrogen readiness.
