Newly developed flat gasket system made by SGL. The flat gasket consists of 3 graphite and 2 thin stainless steel foils (1.4401 / s = 0,05 mm). They have a sandwich-style design, while the connection between graphite and stainless steel foil consists of a non-adhesive bond. The gasket also has an inner eyelet. The graphite covering layers are impregnated.