Contact Global Websites Turkey ( English ) Visit global site Home Mechanical Seal Optimally designing mechanical seals Several factors play a role in the se­lec­tion of a me­chan­i­cal seal, the me­chan­i­cal seal type, the ma­te­ri­als used, and the manner in which a me­chan­i­cal seal will be operated: process con­di­tions, sealing point where the me­chan­i­cal seal will be used, op­er­at­ing con­di­tions, and the medium to be sealed. Every system will only work as well as its in­di­vid­ual com­po­nents. If one me­chan­i­cal seal func­tions smoothly, then it will lead a largely un­event­ful life. But as soon as the leakage rate rises or if the me­chan­i­cal seal even fails, its im­por­tance quickly becomes self-ev­i­dent. Me­chan­i­cal seals are there­fore very im­por­tant in terms of process sta­bil­ity, plant safety, and economic vi­a­bil­ity. IMPORTANT FACTORS AND COMPETENCIES FOR THE SELECTION OF MECHANICAL SEALS Elements of a mechanical seal The me­chan­i­cal seal es­sen­tially consists of two flat, annular sliding surfaces that are pressed together. One sliding surface is fixed to the sta­tion­ary machine casing, while the other sliding surface is fixed to the rotating shaft. The medium to be sealed, which is gen­er­ally in contact with the outer edge of the sliding surfaces, pen­e­trates the gap between the sliding surfaces, forming a lu­bri­cat­ing film, and emerges at the inner edge as leakage. The pressure dif­fer­en­tial to be sealed is es­tab­lished in the radial di­rec­tion. In its simplest form, a me­chan­i­cal seal can be imagined as a collar that is arranged on, and rotates with, the shaft. Definition of mechanical seal (abbreviated GLRD) A me­chan­i­cal seal is a machine element made to seal the passage point of a rotating part (usually a shaft) through a wall (usually the machine casing). Features of the me­chan­i­cal seal are two surfaces sliding on each other – usually arranged at right angles to the ro­ta­tional axle – which are pressed together by axial forces. Between the sliding surfaces is a liquid or gaseous lu­bri­cat­ing film. Every me­chan­i­cal seal pos­sesses five basic elements: One ring (usually the seal face) circulating synchronously with the rotating part (shaft) Secondary seal (usually O-ring) between shaft and ring A stationary ring (usually the stationary seat) arranged in the stationary part (casing) Secondary seal (usually O-ring) between these parts Spring for the seal face In­de­pen­dent of the di­rec­tion of rotation me­chan­i­cal seal EagleBurgmann M7N for pres­sures up to 25 bar, tem­per­a­tures from -50°C to +220°C and sliding ve­loc­i­ties of up to 20 m/S (vg). Me­chan­i­cal seal EagleBurgmann M7N, as fre­quently used in ap­pli­ca­tions of the process industry, in the sector of water ap­pli­ca­tions, or as used in the food industry. 1. Seal face 2. Sec­ondary seal 3. Sta­tion­ary seat 4. O-ring 5. Spring Mechanical Seals Basics from EagleBurgmann Play video THE EAGLEBURGMANN GROUP Sealing technology for plants and machines EagleBurgmann is one of the world­wide leading providers of in­dus­trial sealing tech­nol­ogy. Me­chan­i­cal seals, seal supply systems, magnetic cou­plings, carbon floating ring seals, ex­pan­sion joints, gaskets and packings as well as com­pre­hen­sive services are used wherever re­li­a­bil­ity and safety are needed. Mechanical seals and more Sealing tech­nol­ogy by EagleBurgmann is used world­wide in oil and gas in­dus­tries, re­finer­ies, the petro­chem­i­cal, chemical, and phar­ma­ceu­ti­cal in­dus­tries, food pro­cess­ing, energy, water, mining, paper, aero­space, and other in­dus­tries. Close to 5,800 em­ploy­ees provide their ideas, so­lu­tions, and com­mit­ment so that cus­tomers can rely on our sealing tech­nol­ogy. What makes us stand out is our ex­cel­lent quality, great in­no­v­a­tive capacity, and an ex­ten­sive product port­fo­lio for nearly all in­dus­trial processes and fields of ap­pli­ca­tion. Our product port­fo­lio includes every­thing from me­chan­i­cal seals and seal supply systems to magnetic cou­plings, carbon floating ring seals, ex­pan­sion joints, and gaskets and packings as well as com­pre­hen­sive services. Since we are part of the German Freuden­berg and Japanese EKK group, we have all the nec­es­sary re­sources for a firmly based reliable part­ner­ship. EagleBurgmann WORLDWIDE Please choose country/region Please select © 2021 EagleBurgmann Login Portal Terms-/conditions Purchase conditions Data privacy statement Legal Information Society Services Contact