[{"data":1,"prerenderedAt":180},["ShallowReactive",2],{"blog-en-\u002Fblog\u002Fmechanical-seals-for-pumps":3,"blog-related-\u002Fblog\u002Fmechanical-seals-for-pumps":161},{"id":4,"title":5,"alternateArticle":6,"authors":7,"body":13,"category":147,"contentOrigin":148,"date":149,"description":150,"extension":151,"image":152,"lastUpdated":153,"meta":154,"navigation":155,"ogImage":156,"originalArticle":157,"path":6,"seo":158,"stem":159,"tags":156,"__hash__":160},"blog_en\u002Fblog\u002Fmechanical-seals-for-pumps.md","Mechanical seals for pumps: description, uses and types","\u002Fblog\u002Fmechanical-seals-for-pumps",[8],{"name":9,"position":10,"avatarUrl":11,"link":12},"Arturo Romero","CIO","https:\u002F\u002Fgithub.com\u002Farturork.png","https:\u002F\u002Flinkedin.com\u002Fin\u002Farturork",{"type":14,"value":15,"toc":134},"minimark",[16,20,23,26,29,32,35,40,43,48,51,55,58,62,65,68,71,85,89,92,96,99,118,122],[17,18,19],"p",{},"In mechanisms or systems such as pumps, a mechanical seal is a component that\nhelps to join a fixed part with a rotating part under pressure to hermetically\nseal. This prevents leaks or drips that would imply a deterioration in the seals\nand, consequently, continuous stoppages in the pumping system.",[17,21,22],{},"The most important parts of the seals are the mechanical faces: a rotating or\nswivel face that is attached to a shaft and a stationary face that is fixed to\nthe system cover.",[17,24,25],{},"It is important to mention that the materials used to manufacture mechanical\nseals will depend entirely on the liquids that will be pumped. In the most\ncommon case, which is potable water, the ideal material composition is graphite\nwith ceramic.",[17,27,28],{},"If the liquids to be pumped are abrasive, graphite is used with silicon carbide,\na material that resists and prevents wear. Carbon prevents overheating during\ndry start-up.",[17,30,31],{},"Finally, both seal faces made of silicon carbide offer greater resistance to\nabrasives that may be found in liquids.",[17,33,34],{},"Because graphite is self-lubricating, mechanical pump seals can be pressed into\nthe shaft of a pump, which will rotate smoothly and the oil from the equipment\nwill remain inside.",[36,37,39],"h2",{"id":38},"types-of-mechanical-seals","Types of mechanical seals",[17,41,42],{},"Although there is currently a wide variety of types of mechanical seals for\npumps and each one is used according to its functionality, we can divide them\ntaking into account their characteristics into three main groups.",[44,45,47],"h3",{"id":46},"thrust-and-non-thrust-seals","Thrust and non-thrust seals",[17,49,50],{},"Thrust seals work from a spring to impart a fixed sealing force, while\nnon-thrust seals use springs with a sealed bellows.",[44,52,54],{"id":53},"conventional","Conventional",[17,56,57],{},"These parts are primarily used for compressor and pump modifications or\nupgrades.",[44,59,61],{"id":60},"balanced-and-unbalanced","Balanced and unbalanced",[17,63,64],{},"Balanced are capable of withstanding higher pressures and are ideal for liquids\nthat have low lubrication. Unbalanced are better for jobs with misalignment and\nvibration.",[17,66,67],{},"In the industrial area, mechanical seals are used in mixers, compressors,\nindustrial centrifugal pumps and other machines that need a rotating shaft.",[17,69,70],{},"In the automotive field, these components are installed in engine cooling\nsystems and air conditioning compressors. In more domestic applications,\nmechanical seals are found in water pumping systems and household appliances\nsuch as washing machines.",[17,72,73,74,79,80,84],{},"To learn about other\n",[75,76,78],"a",{"href":77},"\u002Fproducts","applications of graphite in industry",",\nclick on this link. If you need guidance in choosing a carbon or graphite-based\nsolution, ",[75,81,83],{"href":82},"\u002Fcontact","contact us here"," for more\ninformation.",[36,86,88],{"id":87},"limitations-to-consider","Limitations to consider",[17,90,91],{},"Performance depends on graphite grade, grain orientation, temperature, load, pressure, speed, and operating environment. Material selection should be confirmed for your actual process conditions.",[36,93,95],{"id":94},"information-needed-for-a-quote","Information needed for a quote",[17,97,98],{},"To guide selection or prepare a quote, ESGRAF typically needs:",[100,101,102,106,109,112,115],"ul",{},[103,104,105],"li",{},"Application and operating conditions (temperature, atmosphere, load).",[103,107,108],{},"Dimensions, technical drawing, or CAD file when applicable.",[103,110,111],{},"Required quantity.",[103,113,114],{},"Requested grade or material currently in use.",[103,116,117],{},"Observed issue with the previous part or lubricant, if any.",[36,119,121],{"id":120},"request-a-quote","Request a quote",[17,123,124,125,129,130,133],{},"Share these details with our team at ",[75,126,128],{"href":127},"\u002F","ESGRAF"," or ",[75,131,132],{"href":82},"request information",". A specialist will review your application before recommending a grade or geometry.",{"title":135,"searchDepth":136,"depth":136,"links":137},"",2,[138,144,145,146],{"id":38,"depth":136,"text":39,"children":139},[140,142,143],{"id":46,"depth":141,"text":47},3,{"id":53,"depth":141,"text":54},{"id":60,"depth":141,"text":61},{"id":87,"depth":136,"text":88},{"id":94,"depth":136,"text":95},{"id":120,"depth":136,"text":121},"Use cases","translation","2020-08-27","In mechanisms or systems such as pumps, a mechanical seal is a composite part that helps to join a fixed part with a mobile part under pressure to close hermetically and to couple. This prevents leaks or drips that would imply a deterioration in the seals and, consequently, continuous stoppages in the pumping system.","md","\u002Fassets\u002Fblog\u002Fmechanical-seals-for-pumps.webp","2026-07-22",{},true,null,"\u002Fblog\u002Fsellos-mecanicos-para-bombas",{"title":5,"description":150},"blog\u002Fmechanical-seals-for-pumps","BWtd1dwwatHaTGzPYkIi6RC9AryDzNm20Yqx4IYBMVc",[162,168,174],{"path":163,"title":164,"description":165,"image":166,"date":167,"category":147},"\u002Fblog\u002Fspheroidal-graphite-cast-iron","Spheroidal graphite cast iron - in which industries is it needed?","Cast irons are a group of ferrous alloys that have a large number of properties and have above 2% carbon. In these cases the carbon does not dissolve completely in the iron and solidifies in the form of graphite or iron carbide. One of the types is spheroidal graphite cast iron or nodular cast iron.","\u002Fassets\u002Fblog\u002Fspheroidal-graphite-cast-iron.webp","2020-12-22",{"path":169,"title":170,"description":171,"image":172,"date":173,"category":147},"\u002Fblog\u002Fbenefits-graphite-dielectric-properties","Anisotropic conductivity of graphite: conductor and insulator by direction","Graphite is not a uniform dielectric: it conducts well in the basal plane and behaves like an insulator perpendicular to the layers. That anisotropy explains its role in EDM, brushes, and thermal components.","\u002Fassets\u002Fblog\u002Fbenefits-graphite-dielectric-properties.webp","2020-12-15",{"path":175,"title":176,"description":177,"image":178,"date":179,"category":147},"\u002Fblog\u002Fcrystalline-graphite-flake","Crystalline flake graphite: utilization and impact in the industry","Graphite is a mineral that can be obtained naturally but also artificially. artificially. It is one of the most stable allotropic forms of carbon and has a wide range of industrial uses. It is one of the most stable allotropic forms of carbon and has a wide range of applications due to its characteristics.","\u002Fassets\u002Fblog\u002Fcrystalline-graphite-flake.webp","2020-12-10",1785448974057]