{"id":16533,"date":"2017-10-24T10:47:39","date_gmt":"2017-10-24T08:47:39","guid":{"rendered":"https:\/\/www.rct-online.de\/magazin\/?p=16533"},"modified":"2026-06-17T13:48:57","modified_gmt":"2026-06-17T11:48:57","slug":"chemical-tubes-for-handling-aggressive-media","status":"publish","type":"post","link":"https:\/\/www.rct-online.de\/magazin\/en\/chemical-tubes-for-handling-aggressive-media\/","title":{"rendered":"Chemical Tubes for Handling Aggressive Media"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_73 ez-toc-wrap-center counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.rct-online.de\/magazin\/en\/chemical-tubes-for-handling-aggressive-media\/#Spoilt_for_Choice\" title=\"Spoilt for Choice\">Spoilt for Choice<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.rct-online.de\/magazin\/en\/chemical-tubes-for-handling-aggressive-media\/#What_Are_Aggressive_Media\" title=\"What Are Aggressive Media?\">What Are Aggressive Media?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.rct-online.de\/magazin\/en\/chemical-tubes-for-handling-aggressive-media\/#Guidance_for_Tubing_Selection\" title=\"Guidance for Tubing Selection\">Guidance for Tubing Selection<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.rct-online.de\/magazin\/en\/chemical-tubes-for-handling-aggressive-media\/#Chemical_Tubes_in_Focus\" title=\"Chemical Tubes in Focus\">Chemical Tubes in Focus<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.rct-online.de\/magazin\/en\/chemical-tubes-for-handling-aggressive-media\/#Silicone_Tubings\" title=\"Silicone Tubings\">Silicone Tubings<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.rct-online.de\/magazin\/en\/chemical-tubes-for-handling-aggressive-media\/#EPDM_Tubings\" title=\"EPDM Tubings\">EPDM Tubings<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.rct-online.de\/magazin\/en\/chemical-tubes-for-handling-aggressive-media\/#FKM_Tubings\" title=\"FKM Tubings\">FKM Tubings<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.rct-online.de\/magazin\/en\/chemical-tubes-for-handling-aggressive-media\/#PTFE_Tubings\" title=\"PTFE Tubings\">PTFE Tubings<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.rct-online.de\/magazin\/en\/chemical-tubes-for-handling-aggressive-media\/#Transferring_Aggressive_Media_%E2%80%93_A_Conclusion\" title=\"Transferring Aggressive Media \u2013 A Conclusion\">Transferring Aggressive Media \u2013 A Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n<p style=\"text-align: justify;\">Transferring corrosive media is a routine task in the laboratory. That makes choosing the right <a href=\"https:\/\/www.rct-online.de\/en\/tubes-hoses\">tubes and hoses<\/a> all the more important if you want to avoid unpleasant surprises. Reliable chemical tubes prevent leaks and stop the transferred medium from being contaminated. The following section explains which plastic hoses suit acids, bases, oxidising agents, or aggressive gases.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Spoilt_for_Choice\"><\/span>Spoilt for Choice<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">The choice of chemical tubes is huge, so picking the right material for the job is rarely easy. All too often, people simply grab whatever hose is within reach. Yet that hose may not be intended for aggressive media at all. The result is a serious loss of both performance and safety. Match the tube material instead to the medium and to the ambient conditions you expect.<\/p>\n<p><center><a href=\"https:\/\/www.rct-online.de\/en\/tubes-hoses\/tubing-made-of-elastomers-soft-rubber\/epdmpp-tubing\/28516\/epdm\/pp-pump-and-chemical-tubing\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-333 size-full\" title=\"EPDM\/PP High-Performance Pump and Chemical Hose\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/EPDM-PP-Hochleistungs-Pumpen-und-Chemieschlauch.jpg\" alt=\"EPDM PP High-Performance Pump and Chemical Hose\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/EPDM-PP-Hochleistungs-Pumpen-und-Chemieschlauch.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/EPDM-PP-Hochleistungs-Pumpen-und-Chemieschlauch-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a> <a href=\"https:\/\/www.rct-online.de\/en\/tubes-hoses\/tubing-made-of-elastomers-soft-rubber\/silicone-tubing\/28685\/silicone-high-temperature-chemical-tubing\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-334 size-full\" title=\"Silicone High-Temperature Chemical Hose\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/Silikon-Hochtemperatur-Chemieschlauch.jpg\" alt=\"Silicone High-Temperature Chemical Hose\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/Silikon-Hochtemperatur-Chemieschlauch.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/Silikon-Hochtemperatur-Chemieschlauch-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/center><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_Are_Aggressive_Media\"><\/span>What Are Aggressive Media?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">\u201cAggressive\u201d media are liquids and gases that can damage materials on brief or prolonged contact. As a rule, the term covers inorganic and organic acids and bases. Typical examples are hydrochloric, sulphuric, nitric, phosphoric and acetic acid, plus ammonia and alkali hydroxide solutions.<\/p>\n<p style=\"text-align: justify;\">Oxidising agents belong here too, such as hydrogen peroxide of organic or inorganic origin. Several gases also fall into this category: ozone, chlorine, hydrogen chloride and hydrogen bromide. Solvents matter as well \u2014 organic ones in particular, for example acetone, ethanol or hydrocarbons.<\/p>\n<p style=\"text-align: justify;\">They, too, help define what makes a hose chemical-resistant. One thing is easy to overlook: mechanical stress can damage chemical tubes as well. Such wear may also limit their use as tube assemblies.<\/p>\n<figure id=\"attachment_319\" aria-describedby=\"caption-attachment-319\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-319 size-full\" title=\"Different Liquid Chemicals\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/Fluessige-Chemikalien.jpg\" alt=\"Liquid Chemicals in a shelf of a laboratory\" width=\"600\" height=\"400\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/Fluessige-Chemikalien.jpg 600w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/Fluessige-Chemikalien-300x200.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-319\" class=\"wp-caption-text\">\u00a9 benschonewille \/ Fotolia.com<\/figcaption><\/figure>\n<p style=\"text-align: justify;\">For this reason, always check a plastic hose for compatibility and resistance before you use it. The guidance below will help you choose the right product for transferring aggressive media.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Guidance_for_Tubing_Selection\"><\/span>Guidance for Tubing Selection<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">Chemical-resistance tables and lists should be your first port of call. They show how well products withstand different chemicals. Always check the conditions under which that resistance was assessed. A substance may have no effect on a hose at room temperature. Even so, it could still attack the tube or hose at higher temperatures or pressures. As a rule, stronger forces \u2014 pressure above all \u2014 and higher temperatures raise the demands on the product.<\/p>\n<p><center><a href=\"https:\/\/www.rct-online.de\/en\/tubes-hoses\/tubing-made-of-elastomers-soft-rubber\/fpm-tubing\/28535\/fpm-double-wall-jacket-chemical-tubing\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-325 size-full\" title=\"FPM Double-Jacket Chemical Tubing made of soft rubber\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/FPM-Doppelmantel-Chemieschlauch.jpg\" alt=\"FPM Double-Jacket Chemical Tubing made of soft rubber\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/FPM-Doppelmantel-Chemieschlauch.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/FPM-Doppelmantel-Chemieschlauch-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a> <a href=\"https:\/\/www.rct-online.de\/en\/tubes-hoses\/tubing-made-of-elastomers-soft-rubber\/fpm-tubing\/28525\/fpm-micro-spaghetti-chemical-tubing-multi-lumen\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-326 size-full\" title=\"FPM Multichannel Micro Spaghetti Chemical Hose\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/FPM-Mehrkanal-Mikro-Spaghetti-Chemieschlauch.jpg\" alt=\"FPM Multichannel Micro Spaghetti Chemical Tubings\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/FPM-Mehrkanal-Mikro-Spaghetti-Chemieschlauch.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/FPM-Mehrkanal-Mikro-Spaghetti-Chemieschlauch-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/center><\/p>\n<p style=\"text-align: justify;\">If the lists draw a blank, a simple test can help. Take small test pieces from your chemical tube and weigh each one. Note the diameter and length too, if you do not already have these figures. Then place the pieces in your chosen fluid for at least two days. Afterwards, rinse, dry and measure them again. Any deviation from the earlier values points to incompatibility. Obvious changes in appearance or feel are warning signs too.<\/p>\n<p><center><a href=\"https:\/\/www.rct-online.de\/en\/tubes-hoses\/tubing-made-of-elastomers-soft-rubber\/fpm-tubing\/28530\/fpm-chemical-tubing-high-flexible-60\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-330 size-full\" title=\"FPM Chemical Hoses High Flexible 60\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/FPM-Chemieschlauch-High-Flexible-60.jpg\" alt=\"FPM Chemical Hoses High Flexible 60\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/FPM-Chemieschlauch-High-Flexible-60.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/FPM-Chemieschlauch-High-Flexible-60-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a> <a href=\"https:\/\/www.rct-online.de\/en\/tubes-hoses\/tubings-and-pipes-made-of-rigid-plastics\/ptfe-tubing\/PRODUCT-ID\/ptfe-chemical-tubing-coloured\" class=\"broken_link\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-331 size-full\" title=\"PTFE Chemical Hose (Coloured)\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/PTFE-Chemieschlauch-farbig.jpg\" alt=\"PTFE Chemical Hoses Coloured\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/PTFE-Chemieschlauch-farbig.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/PTFE-Chemieschlauch-farbig-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/center><\/p>\n<p style=\"text-align: justify;\">Even after the lists and any preliminary tests, due care still applies. Handling potentially damaging liquids and gases always demands caution. Your first reference point should be the operating manual.<\/p>\n<blockquote>\n<p style=\"text-align: justify;\">Inspect the material regularly while it is in use. Wash it thoroughly once the job is done. Both steps reduce risk and extend its service life.<\/p>\n<\/blockquote>\n<h2><span class=\"ez-toc-section\" id=\"Chemical_Tubes_in_Focus\"><\/span>Chemical Tubes in Focus<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">Compatibility between hose materials and chemicals varies enormously. Even so, a few plastic products offer near-universal inertness for industrial and chemical use. The examples below should help you choose the right chemical tube for the job.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Silicone_Tubings\"><\/span>Silicone Tubings<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">Versilic\u00ae, Elastosil\u00ae, Silopren\u00ae and THOMASIL are common trade names for organosiloxane-based rubbers.<\/p>\n<p><center><a href=\"https:\/\/www.rct-online.de\/en\/tubes-hoses\/tubing-made-of-elastomers-soft-rubber\/silicone-tubing\/28684\/silicone-chemical-tubing-standard\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-310 size-full\" title=\"Silicone Tubing Standard\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/Silikon-Chemieschlauch-Standard.jpg\" alt=\"Silicone tubing Standard\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/Silikon-Chemieschlauch-Standard.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/Silikon-Chemieschlauch-Standard-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a> <a href=\"https:\/\/www.rct-online.de\/en\/tubes-hoses\/tubing-made-of-elastomers-soft-rubber\/silicone-tubing\/28692\/silicone-pharma-colour-coded-chemical-tubing\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-311 size-full\" title=\"Silicone Pharma Colour-Code Tubing\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/Silikon-Pharma-Farbcode-Chemieschlauch.jpg\" alt=\"Silicone Pharma Colour-Code Tubing\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/Silikon-Pharma-Farbcode-Chemieschlauch.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/Silikon-Pharma-Farbcode-Chemieschlauch-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/center><\/p>\n<p style=\"text-align: justify;\">Silicone rubber is really an umbrella term for many different types. Blanket statements about it therefore tend to come with exceptions. <a href=\"https:\/\/www.rct-online.de\/en\/tubes-hoses\/tubing-made-of-elastomers-soft-rubber\/silicone-tubing\">Silicone tubings<\/a> are widespread in the laboratory. For most aggressive media and liquids, though, they suit only limited use.<\/p>\n<p><center><a href=\"https:\/\/www.rct-online.de\/en\/tubes-hoses\/tubing-made-of-elastomers-soft-rubber\/silicone-tubing\/28703\/silicone-high-temperature-chemical-pressure-tubing-steel-wire-braiding\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-313 size-full\" title=\"Silicone High-Temperature Pressure Tubing (Steel-Wire Braided)\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/Silikon-Hochtemperatur-Druck-Chemieschlauch-stahldrahtumflochten.jpg\" alt=\"Silicone High-Temperature Pressure Tubing Steel-Wire Braided\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/Silikon-Hochtemperatur-Druck-Chemieschlauch-stahldrahtumflochten.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/Silikon-Hochtemperatur-Druck-Chemieschlauch-stahldrahtumflochten-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a> <a href=\"https:\/\/www.rct-online.de\/en\/tubes-hoses\/tubing-made-of-elastomers-soft-rubber\/silicone-tubing\/28698\/silicone-vacuum-chemical-tubing\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-314 size-full\" title=\"Silicone Vacuum Chemical Tubing\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/Silikon-Vakuum-Chemieschlauch.jpg\" alt=\"Silicone Vacuum Chemical Tubing\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/Silikon-Vakuum-Chemieschlauch.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/Silikon-Vakuum-Chemieschlauch-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/center><\/p>\n<p style=\"text-align: justify;\">Hydrogen peroxide \u2013 of organic or inorganic origin \u2013 does not attack the material, even at higher concentrations. The same holds for sodium hydroxide solution and acetic acid. Other acids, though, grow more destructive as their concentration rises. Its high gas permeability makes the material unsuitable for transferring gases. A silicone tubing for chemicals is usually clear \u2013 transparent or translucent. This lets you inspect the transferred medium visually. Simple pinch clamps regulate the flow, and the hose routes easily through curves and bends.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"EPDM_Tubings\"><\/span>EPDM Tubings<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">Trade names such as Nordel\u00ae, Keltan\u00ae, Vistalon\u00ae and THOMAPREN denote EPDM rubbers. These rubbers combine three monomer components in varying proportions. EPDM stands for ethylene propylene diene rubber. Its resistance makes it a popular choice for chemical tubes or hoses. Because the composition varies, always check the product specification before transferring aggressive media. That way, you confirm suitability for your particular case.<\/p>\n<p><center><a href=\"https:\/\/www.rct-online.de\/en\/tubes-hoses\/tubing-made-of-elastomers-soft-rubber\/epdm-tubing\/28507\/epdm-antista-chemical-pressure-tubing\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-288 size-full\" title=\"EPDM Antistatic Chemical Pressure Tubing\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/EPDM-Antista-Chemie-Druckschlauch.jpg\" alt=\"EPDM Antistatic Chemical Pressure Tubing\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/EPDM-Antista-Chemie-Druckschlauch.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/EPDM-Antista-Chemie-Druckschlauch-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>\u00a0<\/center><\/p>\n<p style=\"text-align: justify;\"><a href=\"https:\/\/www.rct-online.de\/en\/tubes-hoses\/tubing-made-of-elastomers-soft-rubber\/epdm-tubing\">EPDM tubings<\/a> excel at transferring steam and hot water. Their resistance to alkalis and dilute acids holds up in almost any environment. They also cope with some aggressive gases, such as ozone and chlorine. Mineral oils, greases and petrol are a different story. The material can swell badly in these, and in aliphatic, aromatic or chlorinated hydrocarbons. For such media, a tubing assembly is not recommended. EPDM tubings usually come in light or dark colours. Their mechanical properties are robust and typical of elastomers.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"FKM_Tubings\"><\/span>FKM Tubings<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">Fluoroelastomers (FKM, formerly FPM) combine high temperature resistance with chemical stability. They are marketed under names such as Viton\u00ae, Tecnoflon\u00ae, Fluorel\u00ae and THOMAFLUOR.<\/p>\n<p><center><a href=\"https:\/\/www.rct-online.de\/en\/tubes-hoses\/tubing-made-of-elastomers-soft-rubber\/fpm-tubing\/28529\/fpm-chemical-tubing-high-flexible-62\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-294 size-full\" title=\"FPM Chemical Tubing High Flexible 62\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/FPM-Chemieschlauch-High-Flexible-62.jpg\" alt=\"FPM Chemical Tubing High Flexible 62\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/FPM-Chemieschlauch-High-Flexible-62.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/FPM-Chemieschlauch-High-Flexible-62-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a> <a href=\"https:\/\/www.rct-online.de\/en\/tubes-hoses\/tubing-made-of-elastomers-soft-rubber\/fpm-tubing\/28531\/fpm-chemical-tubing-standard-flexible-75\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-295 size-full\" title=\"FPM Chemical Tubing Standard Flexible 75\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/FPM-Chemieschlauch-Standard-Flexible-75.jpg\" alt=\"FPM Chemical Tubing Standard Flexible 75\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/FPM-Chemieschlauch-Standard-Flexible-75.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/FPM-Chemieschlauch-Standard-Flexible-75-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/center><\/p>\n<p style=\"text-align: justify;\">With concentrated inorganic acids, an FKM tubing has the edge over EPDM. These include hydrochloric, sulphuric and nitric acid. Against alkalis, though, FKM clearly comes off worse. Both materials still handle corrosive gases such as chlorine and ozone. For this purpose, FKM tubing assemblies are recommended. That product is highly elastic. It keeps that elasticity under mechanical load and at high temperatures. Its excellent abrasion resistance is also worth noting.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"PTFE_Tubings\"><\/span>PTFE Tubings<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">Polytetrafluoroethylene (PTFE) is sold as Teflon\u00ae PTFE, Chemfluor\u00ae, Hostaflon\u00ae TF and THOMAFLON. <a href=\"https:\/\/www.rct-online.de\/en\/tubes-hoses\/tubings-and-pipes-made-of-rigid-plastics\/ptfe-tubing\">PTFE tubings<\/a> resist almost every aggressive substance. In fact, no chemical tube or hose offers higher chemical stability. Fierce acids such as aqua regia and oleum leave these kind of material untouched.<\/p>\n<p style=\"text-align: justify;\">Both bring virtually every other chemical-resistant hose to its knees. Bases pose no problem either, including ammonia and sodium hydroxide solutions. Nor do aggressive gases such as chlorine, hydrogen chloride, nitrogen oxides and ozone.<\/p>\n<p><center><a href=\"https:\/\/www.rct-online.de\/en\/tubes-hoses\/tubings-and-pipes-made-of-rigid-plastics\/ptfe-tubing\/28769\/ptfe-chemical-tubing-thin-walled\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-300 size-full\" title=\"PTFE Chemical Tubing (Thin-Walled)\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/PTFE-Chemieschlauch-duennwandig.jpg\" alt=\"PTFE Chemical Tubing Thin-Walled\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/PTFE-Chemieschlauch-duennwandig.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/PTFE-Chemieschlauch-duennwandig-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a> <a href=\"https:\/\/www.rct-online.de\/en\/tubes-hoses\/tubings-and-pipes-made-of-rigid-plastics\/ptfe-tubing\/28768\/ptfe-chemical-tubing-micro-thin-walled\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-301 size-full\" title=\"PTFE Chemical Tubing (Micro Thin-Walled)\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/PTFE-Chemieschlauch-mikro-duennwandig.jpg\" alt=\"PTFE Chemical Tubing Micro Thin-Walled\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/PTFE-Chemieschlauch-mikro-duennwandig.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/PTFE-Chemieschlauch-mikro-duennwandig-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/center><\/p>\n<p style=\"text-align: justify;\">The material also performs well with many aggressive substances at elevated temperatures. A few extreme cases still call for caution. With molten alkali metals and elemental fluorine, PTFE is the wrong choice. Anyone relying on PTFE\u2019s chemical resistance should also know its mechanical limits.<\/p>\n<p><center><a href=\"https:\/\/www.rct-online.de\/en\/tubes-hoses\/tubings-and-pipes-made-of-rigid-plastics\/ptfe-tubing\/28774\/ptfe-antista-chemical-tubing-electrically-conductive\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-304 size-full\" title=\"PTFE Antistatic Chemical Tubing\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/PTFE-Antista-Chemieschlauch.jpg\" alt=\"PTFE Antistatic Chemical Tubing\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/PTFE-Antista-Chemieschlauch.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/PTFE-Antista-Chemieschlauch-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a> <a href=\"https:\/\/www.rct-online.de\/en\/tubes-hoses\/tubings-and-pipes-made-of-rigid-plastics\/ptfe-tubing\/28770\/ptfe-chemical-tubing-standard\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-305 size-full\" title=\"PTFE Chemical Tubing Standard\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/PTFE-Chemieschlauch.jpg\" alt=\"PTFE Chemical Tubing Standard\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/PTFE-Chemieschlauch.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/PTFE-Chemieschlauch-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/center><\/p>\n<p style=\"text-align: justify;\">Against <a href=\"https:\/\/www.rct-online.de\/en\/tubes-hoses\/tubing-made-of-elastomers-soft-rubber\/epdm-tubing\">elastomer tubings<\/a> of silicone or EPDM, PTFE feels noticeably less flexible. Tight bends are hard to achieve. The material also creeps under pressure, even at room temperature, which can cause problems. For anyone working at the extremes, though, there is no way around PTFE chemical tubes.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Transferring_Aggressive_Media_%E2%80%93_A_Conclusion\"><\/span>Transferring Aggressive Media \u2013 A Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">With aggressive media, choose the material of lines carefully. Only then can you guarantee both safety and performance. Chemical resistance is the primary criterion, without doubt. Other characteristics matter too: flexibility, pressure behaviour and temperature behaviour. If you have little experience here, or feel unsure, consult a qualified specialist. PTFE may look like the ultimate hose material. Even so, a degree of caution is in order.<\/p>\n<blockquote>\n<p style=\"text-align: justify;\">And yes: among all the tube types here, none can hold a candle to PTFE. Its chemical resistance and thermal load capacity stand alone.<\/p>\n<\/blockquote>\n<p style=\"text-align: justify;\">That said, there is no point using a sledgehammer to crack a nut. The economics of tube selection matter as well. Most other types cost less than PTFE. For many applications, they are entirely sufficient. The subject of chemical-resistant tubes is far from closed. New studies appear all the time, each widening the range of suitable plastics.<\/p>\n<pre><strong>Sources:<\/strong>\r\nSylvia Wetscher: Medienbest\u00e4ndigkeit von Polyethylen f\u00fcr Langzeitanwendungen, Leoben, 2011, master\u2019s thesis, Chair of Materials Science and Testing of Polymers, Montanuniversit\u00e4t Leoben\r\nGottfried W. Ehrenstein, Sonja Pongratz: Best\u00e4ndigkeit von Kunststoffen, 2007, Hanser Publishing ISBN 978-3-446-21851-2\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Transferring corrosive media is a routine task in the laboratory. That makes choosing the right tubes and hoses all the more important if you want to avoid unpleasant surprises. Reliable chemical tubes prevent leaks and stop the transferred medium from being contaminated. The following section explains which plastic hoses suit acids, bases, oxidising agents, or &hellip;<\/p>\n","protected":false},"author":7,"featured_media":11046,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3028],"tags":[4170,4169,2750,3485,2932,2775],"class_list":["post-16533","post","type-post","status-publish","format-standard","has-post-thumbnail","","category-alle-beitraege-en","tag-aggressive-media","tag-chemcial-tubes","tag-chemical-hoses","tag-chemical-tubing","tag-epdm-en","tag-ptfe-en"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Chemical Tubes for Handling Aggressive Media<\/title>\n<meta name=\"description\" content=\"Chemical tubes and hoses for aggressive media: silicone, EPDM, FKM or PTFE? Find the right chemical-resistant tubings for your laboratory. | RCT Magazin\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.rct-online.de\/magazin\/en\/chemical-tubes-for-handling-aggressive-media\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Chemical Tubes for Handling Aggressive Media\" \/>\n<meta property=\"og:description\" content=\"Chemical tubes and hoses for aggressive media: silicone, EPDM, FKM or PTFE? Find the right chemical-resistant tubings for your laboratory. | RCT Magazin\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.rct-online.de\/magazin\/en\/chemical-tubes-for-handling-aggressive-media\/\" \/>\n<meta property=\"og:site_name\" content=\"Reichelt Chemietechnik Magazine\" \/>\n<meta property=\"article:published_time\" content=\"2017-10-24T08:47:39+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-17T11:48:57+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/Chemieschlaeuche-zur-Foerderung-von-aggressiven-Medien.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"533\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Dr. Karl-Heinz Heise\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Dr. Karl-Heinz Heise\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"11 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.rct-online.de\/magazin\/en\/chemical-tubes-for-handling-aggressive-media\/\",\"url\":\"https:\/\/www.rct-online.de\/magazin\/en\/chemical-tubes-for-handling-aggressive-media\/\",\"name\":\"Chemical Tubes for Handling Aggressive Media\",\"isPartOf\":{\"@id\":\"https:\/\/www.rct-online.de\/magazin\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.rct-online.de\/magazin\/en\/chemical-tubes-for-handling-aggressive-media\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.rct-online.de\/magazin\/en\/chemical-tubes-for-handling-aggressive-media\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2017\/10\/Chemieschlaeuche-zur-Foerderung-von-aggressiven-Medien.jpg\",\"datePublished\":\"2017-10-24T08:47:39+00:00\",\"dateModified\":\"2026-06-17T11:48:57+00:00\",\"author\":{\"@id\":\"https:\/\/www.rct-online.de\/magazin\/#\/schema\/person\/de5369aedc25d1f064871d823629e056\"},\"description\":\"Chemical tubes and hoses for aggressive media: silicone, EPDM, FKM or PTFE? 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Danach war er bis zur politischen Wende 1989 als wissenschaftlicher Mitarbeiter am Zentralinstitut f\u00fcr Kernforschung Rossendorf (ZfK) der Akademie der Wissenschaften in verschiedenen Bereichen der Isotopenproduktion und Markierungschemie t\u00e4tig. 1990 wurde er im neu gegr\u00fcndeten Leibnitz-Forschungszentrum Dresden - Rossendorf, dem heutigen Helmholtz-Zentrum, mit der Leitung der Abteilung f\u00fcr Organische Tracerchemie des Instituts f\u00fcr Radiochemie betraut, die sich mit umweltchemischen Prozessen in den Hinterlassenschaften des Uranbergbaus der DDR befasste. Dr. Heise ist begeisterter Hobby-Numismatiker und besch\u00e4ftigt sich dabei vornehmlich mit der h\u00f6fischen Medaillenkunst des 19. 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