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.
Experts speculate over cause of Iberian power outages
The EU and UK will be moving towards using Grid Forming inverters with Energy Storage that has an inherent ability to act as a source of Infinite...