Yes, an O-ring is a type of gasket.
Yes with condition, an O-ring can be considered a type of gasket. Both O-rings and gaskets are used for sealing applications to prevent fluid or gas leakage. However, O-rings have a specific circular shape look like a doughnut while gaskets come in various shapes and designs.
In some cases, an O-ring can be replaced with a gasket depending on the application. However, it is essential to consider factors such as size, shape, material compatibility, and the specific sealing requirements of the application. Consulting with the equipment manufacturer or a sealing specialist can help determine the most suitable replacement option.