The following is about Single Jacketed Gasket related, I hope to help you better understand Single Jacketed Gasket.
The majority of applications for single-jacketed gaskets are normally 1/4" or less in radial width. This type of gasket is widely used in air tool applications and engine applications where space is limited, gasket seating surfaces are narrow and relatively low compressive forces are available for seating the gasket.
Metal Jacketed material: