What gasket material is best suited for high pressure steam service?

For high pressure steam service, spiral wound gaskets made from stainless steel and graphite filler are often the best choice. They offer Excellent thermal and pressure resistance, along with the ability to maintain a tight seal under fluctuating conditions. Additionally, PTFE (Teflon) gaskets can be effective, but they may not handle high pressures as well as spiral wound gaskets. It's important to select a gasket that matches the specific temperature and pressure requirements of the application.