SUNPASS Hemming machine is mainly used for the inner and outer cladding steel strips of graphite composite gaskets; under the action of the hemming machine, it can wrap the formed inner and outer arcs on the inner and outer diameters of the gasket. The edge-wrapped steel belt and the non-metallic gasket are closely combined; the upper and lower rollers make the gasket and the edge-wrapped steel belt form a perfect plane, and the surface of the gasket is more smooth after secondary rolling.