63888 2025 eng lecture 0 -- -- -- Elastomeric seals are essential components in the infrastructure which prevent leakage of gas and ensure proper function of technical devices and are therefore highly safety relevant. For proper function a remaining resilience and tolerance to pressure changes is required. The ageing of elastomers is an undesirable but inevitable process leading to a limited lifetime of rubber products such as seals. Independent of the application, as e.g. automotive, piping or container applications, a long lifetime or at least a timely exchange of a seal before occurrence of critical failure is desired. Hydrogen is a key element for the energy turnaround and therefore the compatibility of seals with hydrogen is essential. In addition to the effect of hydrogen uptake and release, which might also cause destructive effects such as rapid gas decompression, ageing at high temperature under hydrogen atmosphere is of interest too. Most of the existing work is addressing the performance of new materials and comprises only very limited investigations concerning long-term use and the behaviour of aged materials in contact with hydrogen. As ageing can lead to substantial changes of material properties, it must be evaluated whether these changes are beneficial or deteriorating for the component function. In this work we present and compare results of the characterization of three sealing materials (EPDM, HNBR, FKM) after ageing at high temperature under hydrogen and air. Despite the common assumption that ageing under hydrogen atmosphere should be less severe for the material in comparison to air ageing, this is not the case for every material. ASME PVP2025, Pressure Vessels & Piping Conference Montreal, Canada 20.07.2025 25.07.2025 0 publish false true Matthias Jaunich eng uncontrolled Aging eng uncontrolled Seal eng uncontrolled Compression set eng uncontrolled Atomic force microscopy Angewandte Physik 3 Gefahrgutumschließungen; Energiespeicher 3.4 Sicherheit von Lagerbehältern 6 Materialchemie 6.2 Material- und Oberflächentechnologien 7 Bauwerkssicherheit 7.5 Technische Eigenschaften von Polymerwerkstoffen Energie Datei im Netzwerk der BAM verfügbar ("Closed Access") Präsentation Wasserstoff