{"id":3019,"date":"2021-01-21T09:21:13","date_gmt":"2021-01-21T08:21:13","guid":{"rendered":"https:\/\/www.redhillballs.com\/?page_id=3019"},"modified":"2025-09-29T10:48:58","modified_gmt":"2025-09-29T08:48:58","slug":"esferas-de-ptfe-teflon","status":"publish","type":"page","link":"https:\/\/www.redhillballs.com\/pt-pt\/produtos\/esferas-de-plastico\/esferas-de-ptfe-teflon\/","title":{"rendered":"Esferas de PTFE (Teflon)"},"content":{"rendered":"<h2>\ud83d\udee0\ufe0f <a href=\"https:\/\/en.wikipedia.org\/wiki\/Polytetrafluoroethylene\">Esferas de PTFE (Teflon) \u2013 atrito ultrabaixo, quimicamente inertes<\/a><\/h2>\n<p>As esferas de PTFE (Teflon) oferecem resist\u00eancia qu\u00edmica quase universal, atrito ultrabaixo e opera\u00e7\u00e3o antiaderente, \u00e0 prova de corros\u00e3o. S\u00e3o ideais para meios agressivos, ambientes limpos e amplas faixas de temperatura onde metais ou pl\u00e1sticos padr\u00e3o falham\u2014como em v\u00e1lvulas, sistemas de dosagem e mancais de baixa carga.<\/p>\n<h3>\ud83d\udd27 Especifica\u00e7\u00f5es t\u00e9cnicas principais<\/h3>\n<ul>\n<li><strong>Composi\u00e7\u00e3o<\/strong>: PTFE virgem; op\u00e7\u00f5es com carga (vidro\/carbono\/bronze)<\/li>\n<li><strong>Estrutura<\/strong>: Fluoropol\u00edmero altamente cristalino<\/li>\n<li><strong>Dureza<\/strong>: Shore D ~50\u201360<\/li>\n<li><strong>Densidade<\/strong>: ~2,14\u20132,20 g\/cm\u00b3<\/li>\n<li><strong>Temperatura de servi\u00e7o<\/strong>: \u2212200 a +260 \u00b0C (curto prazo ~280 \u00b0C)<\/li>\n<li><strong>Atrito<\/strong>: Coeficiente ~0,05\u20130,10 (a seco); excelente isolante, n\u00e3o magn\u00e9ticas<\/li>\n<\/ul>\n<h3>\u2705 Vantagens<\/h3>\n<ul>\n<li><strong>Resist\u00eancia qu\u00edmica extrema<\/strong>: \u00e1cidos, bases, solventes<\/li>\n<li><strong>Atrito ultrabaixo &amp; antiader\u00eancia<\/strong><\/li>\n<li><strong>Ampla janela de temperatura<\/strong>: do criog\u00e9nico ao alta temperatura<\/li>\n<li><strong>Auto-lubrificantes<\/strong>: movimento silencioso e anticorros\u00e3o<\/li>\n<\/ul>\n<h3>\ud83d\udd04 Aplica\u00e7\u00f5es das esferas de PTFE<\/h3>\n<ul>\n<li><strong>V\u00e1lvulas qu\u00edmicas &amp; de dosagem, sedes<\/strong><\/li>\n<li><strong>Mancais de baixa carga<\/strong> (criog\u00e9nicos\/alta temperatura)<\/li>\n<li><strong>Bombas &amp; medidores de caudal<\/strong><\/li>\n<li><strong>Laborat\u00f3rio, m\u00e9dico, semicondutores<\/strong><\/li>\n<\/ul>\n<h3>\ud83d\udce6 Classes &amp; tamanhos dispon\u00edveis<\/h3>\n<ul>\n<li><a href=\"https:\/\/www.redhillballs.com\/company\/precision-grades\/\"><strong>Classes<\/strong>: ISO 3290 GI \u2013 GIII<\/a><\/li>\n<li><strong>Intervalo de di\u00e2metros<\/strong>: 1\/16&#8243; \u2013 4&#8243;<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\ud83d\udee0\ufe0f Esferas de PTFE (Teflon) \u2013 atrito ultrabaixo, quimicamente inertes As esferas de PTFE (Teflon) oferecem resist\u00eancia qu\u00edmica quase universal, atrito ultrabaixo e opera\u00e7\u00e3o antiaderente, \u00e0 prova de corros\u00e3o. S\u00e3o ideais para meios agressivos, ambientes limpos e amplas faixas de temperatura onde metais ou pl\u00e1sticos padr\u00e3o falham\u2014como em v\u00e1lvulas, sistemas de dosagem e mancais de [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":9148,"parent":3007,"menu_order":6,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-3019","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.8 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Esferas de PTFE (Teflon) \u2013 resist\u00eancia qu\u00edmica e precis\u00e3o<\/title>\n<meta name=\"description\" content=\"Esferas de PTFE (Teflon) oferecem excelente resist\u00eancia qu\u00edmica, baixo atrito e estabilidade t\u00e9rmica em aplica\u00e7\u00f5es industriais exigentes.\" \/>\n<meta name=\"robots\" content=\"index, follow, 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