Which gasket has an oval cross-section?

The gasket with an oval cross-section is a ring joint gasket. This type of gasket is specifically designed to fit into grooves machined on the flanges, creating an effective seal by compressing when the flanges are bolted together. The oval shape allows for an even distribution of pressure along the sealing surface, enhancing its ability to withstand higher pressures and temperatures, making it suitable for critical applications in various industries, particularly in piping systems in the oil and gas sectors.

Other types of gaskets, such as cut asbestos, flat ring, and full face gaskets, typically have shapes that do not resemble an oval cross-section. Cut asbestos gaskets are usually flat and made from layers of asbestos material, while flat ring gaskets are also flat and circular without any special cross-section. Full face gaskets cover the entire surface of the flange, typically having a uniform thickness without an oval design. Thus, the unique characteristics of the ring joint gasket make it the correct choice for being the gasket with an oval cross-section.