ISO 19880-7:2025 Gaseous hydrogen -- Fuelling stations--Part 7: Rubber O-rings

This standard specifies the requirements for rubber O-rings and their housings used to seal high-pressure hydrogen in components of fuelling stations (valves, filters, joints, breakaways, etc.). Covers design, compound, dimensions, and test methods for Orings operating up to 70 MPa and −40 °C to 65 °C. Ensures safe and reliable sealing in hydrogen refuelling systems.