{"id":30713,"date":"2026-02-25T12:55:02","date_gmt":"2026-02-25T11:55:02","guid":{"rendered":"https:\/\/www.fluimac.com\/?page_id=30713"},"modified":"2026-03-18T09:35:36","modified_gmt":"2026-03-18T08:35:36","slug":"tenuta-meccanica-della-pompa","status":"publish","type":"page","link":"https:\/\/www.fluimac.com\/it\/tenuta-meccanica-della-pompa\/","title":{"rendered":"Tenuta meccanica della pompa: funzionamento, montaggio e criteri di scelta negli impianti industriali"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"30713\" class=\"elementor elementor-30713\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-464fa4e elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"464fa4e\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-9c56e23\" data-id=\"9c56e23\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4094b5b elementor-widget elementor-widget-heading\" data-id=\"4094b5b\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Tenuta meccanica della pompa:<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-654d18d elementor-widget elementor-widget-heading\" data-id=\"654d18d\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">funzionamento, montaggio e criteri di scelta negli impianti industriali<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-9eb5820\" data-id=\"9eb5820\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-340e0dd elementor-widget elementor-widget-text-editor\" data-id=\"340e0dd\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Nel settore della movimentazione dei fluidi, la <\/span><b>tenuta meccanica<\/b><span style=\"font-weight: 400;\"> \u00e8 uno dei componenti pi\u00f9 critici: garantisce l\u2019isolamento tra l\u2019interno della pompa e l\u2019ambiente esterno, previene perdite e contribuisce a mantenere l\u2019efficienza dell\u2019impianto nel tempo.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\"> Una tenuta scelta e installata correttamente incide direttamente sulla <\/span><b>continuit\u00e0 operativa<\/b><span style=\"font-weight: 400;\">, soprattutto negli impianti che gestiscono fluidi <\/span><a href=\"https:\/\/www.fluimac.com\/it\/principali-settori-applicativi-delle-pompe-a-doppia-membrana\/\" data-wplink-edit=\"true\"><b>corrosivi, abrasivi o ad alte temperature<\/b><span style=\"font-weight: 400;\">.<\/span><\/a><\/p><p><span style=\"font-weight: 400;\">In questo approfondimento vediamo: <\/span><b>cos\u2019\u00e8 una tenuta<\/b><span style=\"font-weight: 400;\">, i principali sistemi utilizzati, <\/span><b>materiali e tipologie<\/b><span style=\"font-weight: 400;\">, come funziona una tenuta meccanica e le <\/span><b>regole base di montaggio e manutenzione<\/b><span style=\"font-weight: 400;\"> per massimizzare durata e affidabilit\u00e0.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-806e401 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"806e401\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-279e606\" data-id=\"279e606\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4fa3130 elementor-widget elementor-widget-heading\" data-id=\"4fa3130\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Cosa si intende per tenuta di una pompa?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-625ef84 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"625ef84\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-4c2b321 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"4c2b321\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-ee00f80\" data-id=\"ee00f80\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-fa8871e elementor-widget elementor-widget-text-editor\" data-id=\"fa8871e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">La tenuta di una pompa assicura la separazione tra il fluido di processo e l\u2019ambiente esterno nel punto in cui <\/span><b>l\u2019albero rotante attraversa il corpo pompa<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">Senza un sistema di tenuta efficace possono verificarsi:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">perdite di fluido, anche minime ma costanti<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">infiltrazioni indesiderate (aria o contaminanti)<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">usura accelerata dell\u2019albero e dei componenti metallici<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">rischi per la sicurezza, soprattutto con fluidi corrosivi o tossici<br \/><br \/><\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Nelle <a href=\"https:\/\/www.fluimac.com\/it\/principali-settori-applicativi-delle-pompe-a-doppia-membrana\/\">applicazioni industriali<\/a> (<a href=\"https:\/\/www.fluimac.com\/it\/pompe-per-prodotti-chimici\/\">chimica<\/a>,<a href=\"https:\/\/www.fluimac.com\/it\/pompe-industria-siderurgica\/\"> galvanica<\/a>, <a href=\"https:\/\/www.fluimac.com\/it\/pompe-trattamento-acque\/\">depurazione<\/a>, <a href=\"https:\/\/www.fluimac.com\/it\/pompe-industria-delle-vernici\/\">vernici<\/a>, <a href=\"https:\/\/www.fluimac.com\/it\/pompe-industria-petrolchimica\/\">petrolchimico<\/a>, <a href=\"https:\/\/www.fluimac.com\/it\/pompe-industria-alimentare\/\" data-wplink-edit=\"true\">alimentare<\/a>) la scelta della tenuta non \u00e8 un dettaglio: \u00e8 un requisito per <\/span><b>proteggere l\u2019impianto<\/b><span style=\"font-weight: 400;\">, ridurre i consumi e prolungare la vita della pompa.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3a0954e elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"3a0954e\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-45f64b2\" data-id=\"45f64b2\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a487d9a elementor-widget elementor-widget-heading\" data-id=\"a487d9a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Principali sistemi di tenuta utilizzati nelle pompe\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3f2cb7a elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"3f2cb7a\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-d5180c8 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"d5180c8\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-d38acea\" data-id=\"d38acea\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1dc8424 elementor-widget elementor-widget-text-editor\" data-id=\"1dc8424\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">I sistemi pi\u00f9 diffusi sono:<br \/><br \/><\/span><\/p><h4><b>Tenuta a baderna (premistoppa)<\/b><\/h4><p><span style=\"font-weight: 400;\">La tenuta a baderna utilizza <\/span><b>anelli intrecciati<\/b><span style=\"font-weight: 400;\"> impregnati di lubrificanti, compressi attorno all\u2019albero tramite il premistoppa.<\/span><\/p><p><span style=\"font-weight: 400;\">\u00c8 una soluzione semplice e robusta, ancora usata in impianti:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">a bassa pressione<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">con fluidi non particolarmente aggressivi<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">dove serve una regolazione semplice e \u201csul campo\u201d<br \/><br \/><\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Di contro, richiede regolazioni frequenti, sostituzioni periodiche degli anelli e accetta un <\/span><b>minimo trafilamento<\/b><span style=\"font-weight: 400;\"> (necessario per raffreddare e lubrificare).<\/span><\/p><p><span style=\"font-weight: 400;\">Per questo, nei processi moderni viene spesso sostituita dalla tenuta meccanica.<\/span><\/p><p>\u00a0<\/p><h4><b>Tenuta meccanica<\/b><\/h4><p><span style=\"font-weight: 400;\">La tenuta meccanica \u00e8 oggi la soluzione pi\u00f9 utilizzata nell\u2019industria perch\u00e9 offre migliori prestazioni in termini di isolamento, durata e riduzione delle perdite.<\/span><\/p><p><span style=\"font-weight: 400;\">\u00c8 composta da <\/span><b>due superfici di tenuta<\/b><span style=\"font-weight: 400;\"> (facce planari):<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">una solidale all\u2019albero (<\/span><b>rotante<\/b><span style=\"font-weight: 400;\">)<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">una fissata al corpo pompa (<\/span><b>controfaccia<\/b><span style=\"font-weight: 400;\">)<\/span><p>\u00a0<\/p><\/li><\/ul><p><span style=\"font-weight: 400;\">Le facce vengono mantenute in contatto da molle e\/o elementi elastici e dal principio di bilanciamento idraulico\/meccanico. In pratica consente:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">isolamento quasi totale del fluido<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">resistenza a pressioni e temperature elevate<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">minore usura rispetto alla baderna<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">intervalli di manutenzione pi\u00f9 lunghi<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">compatibilit\u00e0 con fluidi corrosivi<\/span><p>\u00a0<\/p><\/li><\/ul><p><span style=\"font-weight: 400;\">La scelta dipende da fluido, pressione, temperatura e condizioni operative. Anche i <\/span><b>materiali<\/b><span style=\"font-weight: 400;\"> sono determinanti per compatibilit\u00e0 chimica e resistenza all\u2019usura: acciaio inox, carburo di silicio, grafite, elastomeri (EPDM, FKM), ecc.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-c26bd69 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"c26bd69\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4ec7769\" data-id=\"4ec7769\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5af9759 elementor-widget elementor-widget-heading\" data-id=\"5af9759\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Funzionamento della tenuta meccanica<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4d945e8 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"4d945e8\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-8dd3c4c elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"8dd3c4c\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-5a55c9c\" data-id=\"5a55c9c\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-72a9234 elementor-widget elementor-widget-text-editor\" data-id=\"72a9234\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Il funzionamento si basa sul contatto controllato tra faccia rotante e controfaccia. Durante la rotazione:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">una <\/span><b>sottile pellicola di fluido<\/b><span style=\"font-weight: 400;\"> lubrifica le superfici e riduce l\u2019usura<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">la pressione interna e la geometria delle facce limitano la fuoriuscita del fluido<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">molle\/elementi elastici mantengono la forza di chiusura anche con vibrazioni o variazioni operative<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">l\u2019elasticit\u00e0 del sistema compensa piccoli disallineamenti dell\u2019albero<\/span><span style=\"font-weight: 400;\"><br \/><br \/><\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Il risultato \u00e8 una sigillatura stabile ed efficiente, anche con carichi intensivi.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-02b3102 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"02b3102\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d676ebd\" data-id=\"d676ebd\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ee4cd6b elementor-widget elementor-widget-heading\" data-id=\"ee4cd6b\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Montaggio: errori comuni e regole essenziali<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a1f4a4f elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"a1f4a4f\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-5b72013 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"5b72013\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-8514809\" data-id=\"8514809\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4a6589c elementor-widget elementor-widget-text-editor\" data-id=\"4a6589c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Una tenuta meccanica funziona bene solo se installata con procedure precise. Gli errori pi\u00f9 comuni sono contaminazioni, montaggio scorretto, lubrificanti non idonei o forze eccessive durante l\u2019assemblaggio.<\/span><\/p><h6><b>Raccomandazioni essenziali<\/b><\/h6><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">pulire accuratamente sedi e superfici di appoggio prima del montaggio<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">non forzare mai i componenti sull\u2019albero (rischio rigature\/deformazioni)<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">usare lubrificanti solo se indicato dal produttore<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">controllare O-ring, molle e guarnizioni prima dell\u2019installazione<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">verificare posizione e accoppiamento tra faccia rotante e controfaccia<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">avviare l\u2019impianto in modo controllato e verificare eventuali trafilamenti nelle prime ore<\/span><span style=\"font-weight: 400;\"><br \/><br \/><\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Un montaggio corretto aumenta la durata della tenuta e riduce il rischio di guasti precoci.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-67d3b01 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"67d3b01\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-b3dd71c\" data-id=\"b3dd71c\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e289112 elementor-widget elementor-widget-heading\" data-id=\"e289112\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Manutenzione e scelta dei ricambi<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3ceb2dd elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"3ceb2dd\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-bd39f23 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"bd39f23\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-fba500e\" data-id=\"fba500e\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e759549 elementor-widget elementor-widget-text-editor\" data-id=\"e759549\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Negli impianti industriali la manutenzione preventiva \u00e8 fondamentale. Una tenuta compromessa pu\u00f2 causare:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">perdite di fluido<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">aumento dei consumi energetici<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">usura dell\u2019albero<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">fermi impianto non programmati<\/span><span style=\"font-weight: 400;\"><br \/><br \/><\/span><\/li><\/ul><h4><b>Buone pratiche<\/b><\/h4><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">programmare ispezioni periodiche delle sedi di tenuta<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">sostituire tempestivamente O-ring, guarnizioni e componenti usurati<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">scegliere materiali compatibili con chimica del fluido e temperatura<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">usare ricambi originali o perfettamente equivalenti<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">monitorare vibrazioni, rumorosit\u00e0 e temperatura in zona tenuta<\/span><span style=\"font-weight: 400;\"><br \/><br \/><\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Avere a magazzino ricambi strategici consente interventi rapidi e riduce i tempi di fermo.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-973f749 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"973f749\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f093354\" data-id=\"f093354\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1a5e4e8 elementor-widget elementor-widget-heading\" data-id=\"1a5e4e8\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Conclusioni<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-615f9f6 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"615f9f6\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-e974ff4 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"e974ff4\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-9052380\" data-id=\"9052380\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e5f32af elementor-widget elementor-widget-text-editor\" data-id=\"e5f32af\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">La scelta e la gestione corretta della tenuta meccanica \u00e8 un fattore chiave per garantire <\/span><b>continuit\u00e0 di servizio, sicurezza e prestazioni<\/b><span style=\"font-weight: 400;\"> negli impianti industriali.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\"> Conoscere le differenze tra i sistemi di tenuta, valutare la compatibilit\u00e0 dei materiali e seguire procedure di montaggio precise permette di prevenire perdite, ridurre i costi di manutenzione e aumentare la durata delle pompe.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a698295 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a698295\" data-element_type=\"section\" id=\"form\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7582fb4\" data-id=\"7582fb4\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-412b794 elementor-widget elementor-widget-heading\" data-id=\"412b794\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Richiedi una consulenza<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-238ba72 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"238ba72\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-78fd9f4 elementor-widget elementor-widget-text-editor\" data-id=\"78fd9f4\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Necessiti di supporto per la scelta dell\u2019agitatore verticale pi\u00f9 in linea con le tue specifiche esigenze di movimentazione fluidi?<\/p><p>Compila il form sottostante e verrai ricontattato dal nostro staff.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-678a78d elementor-widget elementor-widget-global elementor-global-16334 elementor-widget-html\" data-id=\"678a78d\" data-element_type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<script charset=\"utf-8\" type=\"text\/javascript\" src=\"\/\/js-eu1.hsforms.net\/forms\/embed\/v2.js\"><\/script>\n<script>\n  hbspt.forms.create({\n    portalId: \"144007426\",\n    formId: \"5f0eb2f0-a9e4-447e-9efe-2f914dfcbd11\"\n  });\n<\/script>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-fc7312e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"fc7312e\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4fbfbdc\" data-id=\"4fbfbdc\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-bdc16f1 elementor-widget elementor-widget-heading\" data-id=\"bdc16f1\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Le migliori soluzioni, certificate<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0adb21f elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"0adb21f\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-daf0fb0 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"daf0fb0\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-14 elementor-inner-column elementor-element elementor-element-cfafe32\" data-id=\"cfafe32\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-712a804 elementor-widget elementor-widget-image\" data-id=\"712a804\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"425\" height=\"425\" src=\"https:\/\/www.fluimac.com\/wp-content\/uploads\/2024\/04\/certificazione_01.webp\" class=\"attachment-large size-large wp-image-370\" alt=\"Certificazione CE - Fluimac - Pumps we trust\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-14 elementor-inner-column elementor-element elementor-element-273aa74\" 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elementor-widget-image\" data-id=\"85d0561\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"425\" height=\"425\" src=\"https:\/\/www.fluimac.com\/wp-content\/uploads\/2024\/04\/certificazione_04.webp\" class=\"attachment-large size-large wp-image-373\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-14 elementor-inner-column elementor-element elementor-element-b9fce43\" data-id=\"b9fce43\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a8bf1c9 elementor-widget elementor-widget-image\" data-id=\"a8bf1c9\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"425\" height=\"425\" src=\"https:\/\/www.fluimac.com\/wp-content\/uploads\/2024\/04\/certificazione_05.webp\" class=\"attachment-large size-large wp-image-374\" alt=\"Certificazione - Fluimac - Pumps we trust\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-14 elementor-inner-column elementor-element elementor-element-8647c3b\" data-id=\"8647c3b\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b0f2ced elementor-widget elementor-widget-image\" data-id=\"b0f2ced\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"425\" height=\"425\" src=\"https:\/\/www.fluimac.com\/wp-content\/uploads\/2024\/04\/certificazione_FDA-COMPLIANT.webp\" class=\"attachment-large size-large wp-image-375\" alt=\"Certificazione FDA COMPLIANT - Fluimac - Pumps we trust\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-14 elementor-inner-column elementor-element elementor-element-0c83cd3\" data-id=\"0c83cd3\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e61a5b9 elementor-widget elementor-widget-image\" data-id=\"e61a5b9\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"425\" height=\"425\" src=\"https:\/\/www.fluimac.com\/wp-content\/uploads\/2024\/04\/certificazione_07.webp\" class=\"attachment-large size-large wp-image-376\" alt=\"Certificazione IECEX- Fluimac - Pumps we trust\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Tenuta meccanica della pompa: funzionamento, montaggio e criteri di scelta negli impianti industriali Nel settore della movimentazione dei fluidi, la tenuta meccanica \u00e8 uno dei componenti pi\u00f9 critici: garantisce l\u2019isolamento tra l\u2019interno della pompa e l\u2019ambiente esterno, previene perdite e contribuisce a mantenere l\u2019efficienza dell\u2019impianto nel tempo. Una tenuta scelta e installata correttamente incide direttamente [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":369,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":"","_wp_rev_ctl_limit":""},"class_list":["post-30713","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Tenuta meccanica della pompa: funzionamento, montaggio e criteri di scelta negli impianti industriali<\/title>\n<meta name=\"description\" content=\"Come scegliere la tenuta meccanica ideale? 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