Which of the following is a type of gasket used in high-pressure systems?

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The type of gasket used in high-pressure systems is typically a metal ring joint. Metal ring joints are specifically designed for applications that require high pressure and temperature resistance, making them suitable for use in situations where conventional gaskets would fail. These gaskets provide a high level of sealing integrity under extreme conditions due to their robust construction.

Teflon gaskets are often used for their chemical resistance but may not provide the necessary strength for high-pressure applications. Fiberglass gaskets are generally not recommended for high-pressure systems due to their lower compressive strength. Asbestos, while historically used for its heat resistance, is now largely phased out due to health risks associated with its inhalation. In modern applications, safer materials are preferred, and thus, metal ring joints are the standard for high-pressure seals.