{"id":6739,"date":"2021-05-14T17:08:18","date_gmt":"2021-05-14T15:08:18","guid":{"rendered":"https:\/\/www.gremco.de\/?p=6739"},"modified":"2022-01-18T09:07:32","modified_gmt":"2022-01-18T08:07:32","slug":"variants-dual-walled-fluoroplastic-shrink-tubing","status":"publish","type":"post","link":"https:\/\/www.gremco.de\/en\/magazin\/variants-dual-walled-fluoroplastic-shrink-tubing\/","title":{"rendered":"Dual-walled PTFE\/FEP heat shrink tubing"},"content":{"rendered":"<p>A unique GREMCO product is the<strong> dual-walled PTFE\/FEP shrink tubing<\/strong>. This is a s<a href=\"https:\/\/www.gremco.de\/en\/fitcotube-shrinktube\/fluoropolymer-dual-wall\/\">pecial, dual-layer shrink tubing<\/a> consisting of the semi-crystalline fluorocarbon polymer polytetrafluoroethylene (PTFE) and the copolymer tetrafluoroethylene-hexafluoropropylene (FEP). In this way, the unique properties of the materials are combined in one product and complement each other reciprocally. Furthermore, heating the dual-walled PTFE\/FEP shrink sleeve triggers a <strong>melting process<\/strong> of the FEP, while PTFE is <strong>shrinking<\/strong>. Thus, a liquid-tight encapsulation of critical components and parts can be ensured, which can easily withstand strong mechanical abuse in aggressive chemical environments. Furthermore, it also operates at high temperatures.<\/p>\n<p>&nbsp;<\/p>\n<h2>Versions of dual-walled high-temperature shrinkable tubing<\/h2>\n<p>Two different versions of dual-walled heat shrinkable tubing can be differentiated in the GREMCO product range. These are:<\/p>\n<ul>\n<li>Standard dual-walled PTFE\/FEP shrink tubing.<\/li>\n<li>Dual-walled FEP\/EFEP shrink tubing<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2>PTFE\/FEP heat shrink tubing<\/h2>\n<p>In dual-walled PTFE\/FEP shrink tubing, the outer PTFE tube surrounds the internal FEP layer. The PTFE cover, which also provides excellent corrosion resistance, has a minimum shrink temperature in the range of 350\u00b0C (662\u00b0F). The maximum continuous service temperature of the shrink tubing is 210\u00b0C (410\u00b0F). In addition to the high-temperature resistance, this product provides moisture-proof sealing, high chemical resistance, and is also a flame retardant.<\/p>\n<p>In accordance with the above-mentioned properties, the main area of application for dual-walled PTFE\/FEP shrink tubing is in high-temperature line connections of primarily hot\/cold wire connections. The dual-walled heat shrinkable tubing is also used for encapsulation of <strong>temperature sensors<\/strong> in high-temperature applications such as <a href=\"https:\/\/www.gremco.de\/en\/magazin\/heat-protection-electromobility\/\">electric motors<\/a>, transformers for frequency converters, and in the battery compartment of electric vehicles. Further applications are common in <a href=\"https:\/\/www.gremco.de\/en\/medical-equipment\/\">medical technology<\/a> as well as in the aerospace industry.<\/p>\n<h2><img loading=\"lazy\" class=\"alignnone wp-image-5456\" src=\"https:\/\/www.gremco.de\/app\/uploads\/2020\/12\/Fluorpolymers-dual-wall-300x300.jpg\" alt=\"dual-walled shrink tubing\" width=\"245\" height=\"245\" srcset=\"https:\/\/www.gremco.de\/app\/uploads\/2020\/12\/Fluorpolymers-dual-wall-300x300.jpg 300w, https:\/\/www.gremco.de\/app\/uploads\/2020\/12\/Fluorpolymers-dual-wall-150x150.jpg 150w, https:\/\/www.gremco.de\/app\/uploads\/2020\/12\/Fluorpolymers-dual-wall.jpg 650w\" sizes=\"(max-width: 245px) 100vw, 245px\" \/><\/h2>\n<p>&nbsp;<\/p>\n<h2>Dual-walled FEP\/EFEP shrink tubing<\/h2>\n<p><strong>Dual-walled FEP\/EFEP shrink tubing<\/strong> consists of an outer shrinkable FEP sleeve with an inner EFEP layer. EFEP is a terpolymer that differs from pure FEP containing additive ethylene resulting in a lower melt temperature. In terms of properties and applications, these are largely similar to those of classic dual-walled shrink tubing. In contrastFEP\/EFEP shrink tubing is primarily used in temperature-sensitive applications in which damage would occur as a result of excessively high processing temperatures. Accordingly, this is only 215 \u00b0C (419 \u00b0F), while the maximum continuous operating temperature is set at 150 \u00b0C (302 \u00b0F). The main mechanical and chemical properties are very similar to the classic dual-walled PTFE\/FEP shrink tubing.<\/p>\n","protected":false},"excerpt":{"rendered":"A unique GREMCO product is the dual-walled PTFE\/FEP shrink tubing. This is a special, dual-layer shrink tubing consisting of the semi-crystalline fluorocarbon polymer polytetrafluoroethylene (PTFE) and the copolymer tetrafluoroethylene-hexafluoropropylene (FEP). In this way, the unique properties of the materials are combined in one product and complement each other reciprocally. Furthermore, heating the dual-walled PTFE\/FEP shrink[&#8230;]","protected":false},"author":16,"featured_media":5456,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false},"categories":[684,685],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v18.2.1 (Yoast SEO v18.4.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Dual-walled PTFE\/FEP heat shrink tubing<\/title>\n<meta name=\"description\" content=\"Dual-walled PTFE\/FEP shrink tubing enables liquid-tight encapsulation of critical components and parts such as temperature sensors.\" \/>\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.gremco.de\/en\/magazin\/variants-dual-walled-fluoroplastic-shrink-tubing\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Dual-walled PTFE\/FEP heat shrink tubing\" \/>\n<meta property=\"og:description\" content=\"Dual-walled PTFE\/FEP shrink tubing enables liquid-tight encapsulation of critical components and parts such as temperature sensors.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.gremco.de\/en\/magazin\/variants-dual-walled-fluoroplastic-shrink-tubing\/\" \/>\n<meta property=\"og:site_name\" content=\"GREMCO GmbH\" \/>\n<meta property=\"article:published_time\" content=\"2021-05-14T15:08:18+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-01-18T08:07:32+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.gremco.de\/app\/uploads\/2020\/12\/Fluorpolymers-dual-wall.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"650\" \/>\n\t<meta property=\"og:image:height\" content=\"650\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Valentin Braun\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.gremco.de\/#organization\",\"name\":\"GREMCO GmbH\",\"url\":\"https:\/\/www.gremco.de\/\",\"sameAs\":[\"https:\/\/www.linkedin.com\/company\/gremco-gmbh\/\"],\"logo\":{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.gremco.de\/#logo\",\"inLanguage\":\"en-US\",\"url\":\"https:\/\/www.gremco.de\/app\/uploads\/2017\/11\/gremco_logo_2x.png\",\"contentUrl\":\"https:\/\/www.gremco.de\/app\/uploads\/2017\/11\/gremco_logo_2x.png\",\"width\":500,\"height\":100,\"caption\":\"GREMCO 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