Hydrogen O-Ring Q&A #6

What Is the Difference Between High-Pressure and Low-Pressure Hydrogen O-Rings?

Q. Is there a difference between O-rings for high-pressure and low-pressure hydrogen?

A. Yes. High-pressure hydrogen applications require protection against rapid gas decompression and other pressure-related failure modes.

- Explanation

As hydrogen pressure increases, more gas permeates into the rubber material. Therefore, the performance requirements for 70 MPa hydrogen service are very different from those of lower-pressure systems.

Rapid Gas Decompression becomes a significant concern at higher pressures. Additional factors such as extrusion resistance, dimensional stability, and seal design also become increasingly important.

- Takaishi's Comment

Hydrogen service conditions vary greatly depending on pressure. Takaishi Industry evaluates each application individually to recommend the most appropriate material and sealing design.