Double Jacketed Gasket is saying as Metal Jacketed Gasket. As the name suggests, consist of a metallic outer shell with either non-metallic compressed bars filler. Double Jacketed Gaskets combines the advantages of both metal and non-metal.

A double jacketed gasket consists of a curved metallic tube with a wide C-shaped profile, and a second metal piece that bridges the inside of the C-shape's opening, with filler material filling the interior space.