Back-up rings have no intended sealing function. Instead, as their name indicates, they are protective and supporting elements made from extrusion-resistant materials which generally have a rectangular cross-section. They are installed in a groove together with an elastomer sealing element, preferably with a corresponding O-ring in static applications.
UK Enters ‘Golden Age of Nuclear’
Anybody know why it takes from 2025 to mid 2030's to build a factory-made SMR, by RR? Ten years... has there been no demonstrator either? Do RR...