Paper machine

A drying and smoothing apparatus for a machine which produces or processes a layer of material, specifically for machines that produce or process paper, cardboard or tissue, the drying and smoothing apparatus including a heated drying and smoothing cylinder having a curved external surface, the drying and smoothing cylinder configured to rotate, a pressurizing jacket encasing a portion of a curvedexternal surface of the drying cylinder to form a pressure zone, a plurality of stacked sealing assemblies configured to seal the pressure zone from an ambient, the plurality of stacked sealing assemblies being supported on a first end and a second end of the curved surface of the drying and smoothing cylinder, wherein each of the plurality of stacked sealing assemblies include at least three seals, the seals pressed inward against the curved external surface of the drying and smoothing cylinder and stacked in sequence axially outward from the pressure zone to the ambient.