Are There O-Rings Suitable for 70 MPa Hydrogen?

Q. Are there O-rings suitable for 70 MPa hydrogen service?

A. Yes. Takaishi Industry offers EPDM compounds for low-temperature applications and FKM compounds for elevated-temperature applications.

-Explanation

Sealing performance at 70 MPa depends on much more than pressure alone. Temperature, pressure cycling frequency, decompression conditions, and gland design all influence seal reliability.

For example, hydrogen refueling stations often require excellent low-temperature performance, while compressors may require enhanced heat resistance.

Therefore, selecting an O-ring based solely on pressure ratings is not sufficient.

-Takaishi's Comment

Takaishi Industry provides both EPDM and FKM solutions for high-pressure hydrogen service and works closely with customers to optimize material selection for specific operating conditions.

(Picture: Hydrogen station at Tokyo Shiba-park, by Iwatani Corporation)