{"id":6803,"date":"2019-02-22T14:51:36","date_gmt":"2019-02-22T13:51:36","guid":{"rendered":"http:\/\/www.tempco.it\/blog\/?p=6803"},"modified":"2019-02-26T17:20:07","modified_gmt":"2019-02-26T16:20:07","slug":"mechanical-seal-troubleshooting-part-2","status":"publish","type":"post","link":"https:\/\/www.tempco.it\/blog\/en\/6803\/mechanical-seal-troubleshooting-part-2\/","title":{"rendered":"Mechanical seal troubleshooting part 2"},"content":{"rendered":"

Chapter two on the topic of how to detect and recognize the causes of mechanical seal troubles<\/strong>, after the post dedicated to the problems related to lubrication<\/a>. Mechanical seals can undergo a series of different kind of wear<\/strong>. An irregular wear can be the consequence of an excessive wear on bearings and in presence of vibrations<\/strong>.<\/p>\n

\"usura<\/a><\/p>\n

Small amounts of tough particles in the fluids can also lead to corrosion on mechanical seals<\/strong>: by sedimenting on the seal’s surface, these particles act like cutting tools in a grinding machine, damaging contact surfaces. An intermittent spotted wear<\/strong> on the seal surface can also relate to an imperfect linearity of the seal surface itself, due to defective mechanical construction of the seal, or even due to a wrong mounting<\/strong>.<\/p>\n

\"usura<\/a>\"usura<\/a><\/p>\n

Mismatched materials and fluids<\/strong><\/em>
\nThe right choice of seal\u2019s materials<\/strong> is essential to ensure a long mechanical seal working lifetime, enabled by the compatibility between the seal\u2019s material and the pumped fluids. A wrong matching can lead to swelling problems in elastomers<\/strong>, boosted by the high temperatures and the long exposure periods involved. Corrosion on mechanical seals<\/strong> can also be provoked by the incompatibility between materials and fluids, deteriorating the seal surfaces.<\/p>\n

\"swelling<\/a>\"corrosione<\/a><\/p>\n

Installation and connections<\/strong><\/em>
\nThe correct installation is also a key factor to preserve the conditions of a mechanical seal. Pictured here are two examples of damages related to a wrong installation of the seal<\/strong>, leading to cut or damaged OR<\/strong> and breakage of the seal ring<\/strong>.<\/p>\n

\"OR<\/a>\"rottura<\/a><\/p>\n

Also the working pressure of the pump<\/strong> must be comprised in the range of design values of the mechanical seal. In case of excessive pressure<\/strong>, the seal can be damaged irreversibly. At last, pay attention to the rotation verse of the pump<\/strong>, to avoid a breakage of the spring<\/strong>. This breakages can happen with a wrong electrical connection of the engine, a pump installed in parallel without a check valve, or also with a return flow when the pump is off.<\/p>\n

\"danni<\/a>\"rottura<\/a><\/p>\n

 <\/p>\n

The Tempco Service<\/strong><\/a> is at your disposal to solve any doubt or needs.<\/p>\n","protected":false},"excerpt":{"rendered":"

Mechanical seal troubleshooting, wear, corrosion, breakages and deformation due to wrong installation or mismatching bewteen construction materials and pumped fluids. <\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[247,469,61,87,88,84],"tags":[1601,254,474,1600,800,1581,279,1599,1567,1563,1602,727,1604,356,1596,1569,1603,1576],"class_list":["post-6803","post","type-post","status-publish","format-standard","hentry","category-corrosion","category-corrosione-en","category-energia-termica-en","category-maintenance","category-service","category-thermal-energy","tag-breakage","tag-corrosion","tag-corrosione-en","tag-elastomers","tag-engines","tag-lubrication","tag-maintenance","tag-mechanical-seals","tag-o-ring","tag-pressure","tag-problems-resolution","tag-pumps","tag-seal-ring","tag-service","tag-swelling","tag-troubleshooting","tag-vibrations","tag-wear"],"yoast_head":"\nMechanical seal troubleshooting part 2 - 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