{"id":3030,"date":"2021-05-12T00:00:00","date_gmt":"2021-05-11T22:00:00","guid":{"rendered":"https:\/\/epidor.com\/nuestras-soluciones-de-estanqueidad-para-cilindros-hidraulicos-de-altas-prestaciones\/"},"modified":"2026-01-09T12:20:49","modified_gmt":"2026-01-09T11:20:49","slug":"our-sealing-solutions-for-high-performance-hydraulic-cylinders","status":"publish","type":"post","link":"https:\/\/epidor.com\/en\/blog\/nuestras-soluciones-de-estanqueidad-para-cilindros-hidraulicos-de-altas-prestaciones\/","title":{"rendered":"Our sealing solutions for high-performance hydraulic cylinders"},"content":{"rendered":"<p><strong>There are many contexts in which sealing systems are present. On this occasion, we are going to talk about the importance of seals and sealing guides for the proper functioning of large machines such as excavators, tractors and construction cranes.<\/strong><br \/>\n<br \/><\/br><br \/>\nIn all large machines we find a common and very important element, the hydraulic cylinders. These are subjected to great stresses as a result of the severe and extreme conditions in which the equipment is usually used. Therefore, for these machines to work properly, it is necessary that the seals and guides inside the hydraulic cylinders work properly.<br \/>\n<br \/><\/br><br \/>\nIn the following video we present, by way of illustration, the elements to which we will refer throughout this article. We hope it will help you understand the important role played by the<strong> sealing gaskets and guides<\/strong> in the general operation of the equipment.<br \/>\n<br \/><\/br><\/p>\n<div style=\"text-align: center; margin-left: auto; margin-right: auto;\">\n<div style=\"width: 640px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-3030-1\" width=\"640\" poster=\"https:\/\/epidor.com\/wp-content\/uploads\/2026\/01\/SRT-2021-05-05-Cilindros-Hprestaciones-INTERIOR-Video.jpg\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/epidor.com\/wp-content\/uploads\/2026\/01\/VID-20201221-WA0005.mp4?_=1\" \/><a href=\"https:\/\/epidor.com\/wp-content\/uploads\/2026\/01\/VID-20201221-WA0005.mp4\">https:\/\/epidor.com\/wp-content\/uploads\/2026\/01\/VID-20201221-WA0005.mp4<\/a><\/video><\/div>\n<\/div>\n<p><\/br><\/p>\n<p>The following are some of the most important <strong>sealing gaskets and guides that Epidor Seals and Rubber Technology<\/strong> is manufactured and recommended for high-demanding and high-performance applications such as heavy hydraulics.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 ez-toc-wrap-left counter-flat ez-toc-counter ez-toc-transparent ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Index<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/epidor.com\/en\/blog\/nuestras-soluciones-de-estanqueidad-para-cilindros-hidraulicos-de-altas-prestaciones\/#Juntas_y_guias_de_estanqueidad_para_grandes_maquinas\" >Seals and sealing guides for large machines<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/epidor.com\/en\/blog\/nuestras-soluciones-de-estanqueidad-para-cilindros-hidraulicos-de-altas-prestaciones\/#%E2%80%A2_Juntas_de_piston\" >- Piston seals:<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/epidor.com\/en\/blog\/nuestras-soluciones-de-estanqueidad-para-cilindros-hidraulicos-de-altas-prestaciones\/#%E2%80%A2_Guias_de_piston\" >- Piston guides:<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/epidor.com\/en\/blog\/nuestras-soluciones-de-estanqueidad-para-cilindros-hidraulicos-de-altas-prestaciones\/#%E2%80%A2_Junta_primaria_de_vastago\" >- Primary stem seal:<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/epidor.com\/en\/blog\/nuestras-soluciones-de-estanqueidad-para-cilindros-hidraulicos-de-altas-prestaciones\/#%E2%80%A2_Junta_secundaria_de_vastago\" >- Secondary stem seal:<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/epidor.com\/en\/blog\/nuestras-soluciones-de-estanqueidad-para-cilindros-hidraulicos-de-altas-prestaciones\/#%E2%80%A2_Rascador\" >- Scraper:<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/epidor.com\/en\/blog\/nuestras-soluciones-de-estanqueidad-para-cilindros-hidraulicos-de-altas-prestaciones\/#%E2%80%A2_Guias_de_vastago\" >- Stem guides:<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Juntas_y_guias_de_estanqueidad_para_grandes_maquinas\"><\/span>Seals and sealing guides for large machines<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&nbsp;<\/p>\n<h3 style=\"padding-left: 40px;\"><span class=\"ez-toc-section\" id=\"%E2%80%A2_Juntas_de_piston\"><\/span><strong>- Piston seals:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"padding-left: 40px;\">They are in charge of sealing the piston and cylinder liner, thus ensuring that all the force generated by the oil pressure is transformed into movement. They must be able to maintain a fixed position under load.<\/p>\n<p style=\"padding-left: 40px;\">It is recommended to mount compact seals, capable of withstanding pressures up to 60MPa (600 bar).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-16647 size-full aligncenter\" src=\"https:\/\/epidor.com\/wp-content\/uploads\/2025\/04\/SRT-2021-05-05-Cilindros-Hprestaciones-INTERIOR-DK123D.jpg\" alt=\"Piston seal\" width=\"350\" height=\"279\" \/><\/p>\n<p><\/br><\/p>\n<h3 style=\"padding-left: 40px;\"><span class=\"ez-toc-section\" id=\"%E2%80%A2_Guias_de_piston\"><\/span><strong>- Piston guides:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"padding-left: 40px;\"><strong><span style=\"font-weight: 400;\">As their name suggests, they are responsible for guiding the piston and preventing metal-to-metal contact between the piston and the cylinder liner.<\/span><span style=\"font-weight: 400;\"> They are also responsible for absorbing the lateral forces that may exist due to the demanding work of the hydraulic cylinders. Depending on the load, different materials such as PTFE, phenolic resin (hard fabric) or polyamide are used.<\/span><\/strong><\/p>\n<p style=\"padding-left: 40px;\"><span style=\"font-weight: 400;\">In hydraulic cylinders used in heavy hydraulic applications (pressures between 500 and 700 bar) such as those used in presses, excavators, cranes, etc., a double mounting is usually chosen due to its reliability. <\/span><span style=\"font-weight: 400;\">What does this mean? <\/span><span style=\"font-weight: 400;\">That a first stem seal is mounted and immediately after this another stem seal of different profile than the first one is mounted. <\/span><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-16650 size-full\" src=\"https:\/\/epidor.com\/wp-content\/uploads\/2025\/04\/SRT-2021-05-05-Cilindros-Hprestaciones-INTERIOR-DF101.jpg\" alt=\"Piston guides\" width=\"350\" height=\"279\" \/><\/p>\n<p>&nbsp;<\/p>\n<h3 style=\"padding-left: 40px;\"><span class=\"ez-toc-section\" id=\"%E2%80%A2_Junta_primaria_de_vastago\"><\/span><strong>- Primary stem seal:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"padding-left: 40px;\">The primary rod seal in a high pressure configuration is designed to absorb the total working pressure of the hydraulic system. In addition to withstanding this pressure, it is also responsible for absorbing possible pressure peaks due to the demanding work of the cylinders and machines on which it is mounted. The primary seal leaves a small film of lubricant on the piston rod so that the elements after this seal do not work dry and, therefore, do not wear out prematurely. These elements would be the secondary seal and the scraper.<\/p>\n<p style=\"padding-left: 40px;\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-16653 aligncenter\" src=\"https:\/\/epidor.com\/wp-content\/uploads\/2025\/04\/SRT-2021-05-05-Cilindros-Hprestaciones-INTERIOR-DS129.jpg\" alt=\"Primary stem seal\" width=\"350\" height=\"279\" \/><\/p>\n<p>&nbsp;<\/p>\n<h3 style=\"padding-left: 40px;\"><span class=\"ez-toc-section\" id=\"%E2%80%A2_Junta_secundaria_de_vastago\"><\/span><strong>- Secondary stem seal:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"padding-left: 40px;\">The secondary seal, so called because it is in a second position with respect to the cylinder working chamber, has the main purpose of minimizing the oil film remaining on the piston rod from the primary seal. In case of failure of the primary seal, this one would take its role, and would work as primary seal.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-16656 aligncenter\" src=\"https:\/\/epidor.com\/wp-content\/uploads\/2025\/04\/SRT-2021-05-05-Cilindros-Hprestaciones-INTERIOR-DS101.jpg\" alt=\"Secondary stem seal\" width=\"350\" height=\"279\" \/><\/p>\n<p>&nbsp;<\/p>\n<h3 style=\"padding-left: 40px;\"><span class=\"ez-toc-section\" id=\"%E2%80%A2_Rascador\"><\/span><strong>- Scraper:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"padding-left: 40px;\">The function of the scrapers is to protect the inside of the cylinders from the entry of contaminants coming from the outside. Both seals and guides working inside the cylinders require to work under optimal conditions: no dust, humidity or any environmental influence. When working under these conditions, their useful life is excessively reduced, the operating fluid is contaminated, and most probably the cylinder will stop working properly, having to stop the machinery to proceed to its repair.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-16659 size-full aligncenter\" src=\"https:\/\/epidor.com\/wp-content\/uploads\/2025\/04\/SRT-2021-05-05-Cilindros-Hprestaciones-INTERIOR-DA102.jpg\" alt=\"Scraper\" width=\"350\" height=\"279\" \/><\/p>\n<p>&nbsp;<\/p>\n<h3 style=\"padding-left: 40px;\"><span class=\"ez-toc-section\" id=\"%E2%80%A2_Guias_de_vastago\"><\/span><strong>- Stem guides:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"padding-left: 40px;\">They are responsible for guiding the piston rod and preventing metal-to-metal contact between the piston rod and the hydraulic cylinder head. In addition, they are responsible for absorbing the lateral forces that may exist due to the demanding work of the hydraulic cylinders. Depending on the load, different materials such as PTFE, phenolic resin (hard fabric) or polyamide are used.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-16662 aligncenter\" style=\"margin-top: 0px; margin-bottom: 0px;\" src=\"https:\/\/epidor.com\/wp-content\/uploads\/2025\/04\/SRT-2021-05-05-Cilindros-Hprestaciones-INTERIOR-DF102.jpg\" alt=\"Stem guides\" width=\"350\" height=\"279\" \/><\/p>\n<p><\/br><br \/>\n<span style=\"font-weight: 400;\">At Epidor Seals and Rubber Technology we can advise you on which sealing solutions can help you to keep your large machines running smoothly. You can contact us at <a href=\"https:\/\/epidor-srt.com\/contactanos\/\">following form<\/a>.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Son muchos los contextos en los que los sistemas de estanqueidad est\u00e1n presentes. En esta ocasi\u00f3n, os vamos a hablar de lo importante que son las juntas y gu\u00edas de estanqueidad para el buen funcionamiento de grandes m\u00e1quinas tales como excavadoras, tractores y gr\u00faas de construcci\u00f3n. En todas las grandes m\u00e1quinas encontramos un elemento com\u00fan [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":3038,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[46],"tags":[],"class_list":["post-3030","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-estanqueidad-para-hidraulica-y-neumatica"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Nuestras soluciones de estanqueidad para cilindros hidr\u00e1ulicos de altas prestaciones - Epidor - Expertos en soluciones de estanqueidad<\/title>\n<meta name=\"description\" content=\"En esta ocasi\u00f3n, os vamos a hablar de lo importante que son las juntas y gu\u00edas de estanqueidad para el buen funcionamiento de grandes m\u00e1quinas.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/epidor.com\/en\/blog\/our-sealing-solutions-for-high-performance-hydraulic-cylinders\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nuestras soluciones de estanqueidad para cilindros hidr\u00e1ulicos de altas prestaciones - Epidor - Expertos en soluciones de estanqueidad\" \/>\n<meta property=\"og:description\" content=\"En esta ocasi\u00f3n, os vamos a hablar de lo importante que son las juntas y gu\u00edas de estanqueidad para el buen funcionamiento de grandes m\u00e1quinas.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/epidor.com\/en\/blog\/our-sealing-solutions-for-high-performance-hydraulic-cylinders\/\" \/>\n<meta property=\"og:site_name\" content=\"Epidor - Expertos en soluciones de estanqueidad\" \/>\n<meta property=\"article:published_time\" content=\"2021-05-11T22:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-01-09T11:20:49+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/epidor.com\/wp-content\/uploads\/2025\/04\/SRT-2021-05-05-Cilindros-Hprestaciones-EXTERIOR-865x380px.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"865\" \/>\n\t<meta property=\"og:image:height\" content=\"380\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Marketing Digital\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Marketing Digital\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/epidor.com\/en\/blog\/nuestras-soluciones-de-estanqueidad-para-cilindros-hidraulicos-de-altas-prestaciones\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/epidor.com\/en\/blog\/nuestras-soluciones-de-estanqueidad-para-cilindros-hidraulicos-de-altas-prestaciones\/\"},\"author\":{\"name\":\"Marketing Digital\",\"@id\":\"https:\/\/epidor.com\/en\/#\/schema\/person\/4ac844ecb58831434eec7b420fe8ea11\"},\"headline\":\"Nuestras soluciones de estanqueidad para cilindros hidr\u00e1ulicos de altas prestaciones\",\"datePublished\":\"2021-05-11T22:00:00+00:00\",\"dateModified\":\"2026-01-09T11:20:49+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/epidor.com\/en\/blog\/nuestras-soluciones-de-estanqueidad-para-cilindros-hidraulicos-de-altas-prestaciones\/\"},\"wordCount\":841,\"publisher\":{\"@id\":\"https:\/\/epidor.com\/en\/#organization\"},\"image\":{\"@id\":\"https:\/\/epidor.com\/en\/blog\/nuestras-soluciones-de-estanqueidad-para-cilindros-hidraulicos-de-altas-prestaciones\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/epidor.com\/wp-content\/uploads\/2025\/04\/SRT-2021-05-05-Cilindros-Hprestaciones-EXTERIOR-865x380px.jpg\",\"articleSection\":[\"Estanqueidad para hidr\u00e1ulica y neum\u00e1tica\"],\"inLanguage\":\"en\"},{\"@type\":[\"WebPage\",\"ItemPage\"],\"@id\":\"https:\/\/epidor.com\/en\/blog\/nuestras-soluciones-de-estanqueidad-para-cilindros-hidraulicos-de-altas-prestaciones\/\",\"url\":\"https:\/\/epidor.com\/en\/blog\/nuestras-soluciones-de-estanqueidad-para-cilindros-hidraulicos-de-altas-prestaciones\/\",\"name\":\"Nuestras soluciones de estanqueidad para cilindros hidr\u00e1ulicos de altas prestaciones - 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