{"id":53060,"date":"2026-09-07T05:00:37","date_gmt":"2026-09-07T03:00:37","guid":{"rendered":"https:\/\/fernox.com\/cz\/product\/leak-sealer-f4-express-400ml\/"},"modified":"2026-09-07T05:00:41","modified_gmt":"2026-09-07T03:00:41","slug":"leak-sealer-f4-express-400ml","status":"publish","type":"product","link":"https:\/\/fernox.com\/cz\/residential-solutions\/leak-sealer-f4-express-400ml\/","title":{"rendered":"Leak Sealer F4 Express 400ml"},"content":{"rendered":"<p>Leak Sealer F4 je prost\u0159edek k ut\u011bsn\u011bn\u00ed vnit\u0159n\u00edch net\u011bsnost\u00ed, vyvinut\u00fd pro pou\u017eit\u00ed v cel\u00e9m syst\u00e9mu \u00fast\u0159edn\u00edho topen\u00ed k ut\u011bsn\u011bn\u00ed mal\u00fdch, nep\u0159\u00edstupn\u00fdch net\u011bsnost\u00ed a prosak\u016f, kter\u00e9 mohou zp\u016fsobit pokles tlaku a poruchu kotle. Jakmile se p\u0159\u00edpravek rozpt\u00fdl\u00ed v syst\u00e9mu, vyhled\u00e1 m\u00edsto pronik\u00e1n\u00ed kysl\u00edku a vytvo\u0159\u00ed polymer, kter\u00fd tuto d\u00edrku ut\u011bsn\u00ed. \u00da\u010dinek se projev\u00ed b\u011bhem 1\u201324 hodin po aplikaci. Bylo prok\u00e1z\u00e1no, \u017ee jedine\u010dn\u00e1 \u00fa\u010dinnost tohoto \u0161pi\u010dkov\u00e9ho chemick\u00e9ho p\u0159\u00edpravku pro \u00fapravu vody na trhu zabra\u0148uje ucp\u00e1v\u00e1n\u00ed nebo omezov\u00e1n\u00ed pr\u016ftoku v kotli \u010di citliv\u00fdch sou\u010d\u00e1stech syst\u00e9mu, jako jsou \u010derpadla a bezpe\u010dnostn\u00ed za\u0159\u00edzen\u00ed. \u00danik lze rychle a \u00fa\u010dinn\u011b ut\u011bsnit, ani\u017e by bylo nutn\u00e9 syst\u00e9m zcela vypustit. \u0158ada Fernox Express vyu\u017e\u00edv\u00e1 technologii \u201eBarrier Pressure Pack\u201c a stla\u010den\u00fd vzduch jako hnac\u00ed plyn k vytla\u010dov\u00e1n\u00ed p\u0159\u00edpravku, d\u00edky \u010demu\u017e je cel\u00e1 \u0159ada neho\u0159lav\u00e1. Hnac\u00ed plyn (stla\u010den\u00fd vzduch) se nem\u00eds\u00ed s \u00fa\u010dinnou l\u00e1tkou, tak\u017ee nehroz\u00ed riziko vniknut\u00ed vzduchu do syst\u00e9mu, co\u017e by mohlo urychlit budouc\u00ed riziko koroze.<\/p>\n<ul>\n<li>Rychle vyhled\u00e1v\u00e1 a ut\u011bs\u0148uje nep\u0159\u00edstupn\u00e9 vnit\u0159n\u00ed mikroskopick\u00e9 \u00faniky\n<\/li>\n<li>Rychl\u00e9 a pohodln\u00e9 \u2013 d\u00e1vkov\u00e1n\u00ed za 30 sekund \u2013 nen\u00ed t\u0159eba vypou\u0161t\u011bt syst\u00e9m\n<\/li>\n<li>Bezpe\u010dn\u00e9 pou\u017eit\u00ed \u2013 nezp\u016fsobuje ucp\u00e1n\u00ed potrub\u00ed ani po\u0161kozen\u00ed citliv\u00fdch sou\u010d\u00e1st\u00ed kotle, jako jsou \u010derpadla, odvzdu\u0161\u0148ovac\u00ed ventily a v\u00fdm\u011bn\u00edky tepla\n<\/li>\n<li>Netoxick\u00e9, ekologick\u00e9 slo\u017een\u00ed, hnac\u00ed plyn ve form\u011b stla\u010den\u00e9ho vzduchu a 100 % recyklovateln\u00e1 plechovka\n<\/li>\n<li>\u0160et\u0159\u00ed \u010das a pen\u00edze p\u0159i vypou\u0161t\u011bn\u00ed a oprav\u00e1ch.\n<\/li>\n<li>P\u0159ipojte p\u0159es radi\u00e1tor, plnic\u00ed smy\u010dku nebo syst\u00e9mov\u00fd filtr TF1 \u2013 v\u0161echny adapt\u00e9ry jsou sou\u010d\u00e1st\u00ed dod\u00e1vky<br \/>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Leak Sealer F4 je prost\u0159edek k ut\u011bsn\u011bn\u00ed vnit\u0159n\u00edch net\u011bsnost\u00ed, vyvinut\u00fd pro pou\u017eit\u00ed v cel\u00e9m syst\u00e9mu \u00fast\u0159edn\u00edho topen\u00ed k ut\u011bsn\u011bn\u00ed mal\u00fdch, nep\u0159\u00edstupn\u00fdch net\u011bsnost\u00ed a prosak\u016f, kter\u00e9 mohou zp\u016fsobit pokles tlaku a poruchu kotle. Jakmile se p\u0159\u00edpravek rozpt\u00fdl\u00ed v syst\u00e9mu, vyhled\u00e1 m\u00edsto pronik\u00e1n\u00ed kysl\u00edku a vytvo\u0159\u00ed polymer, kter\u00fd tuto d\u00edrku ut\u011bsn\u00ed. \u00da\u010dinek se projev\u00ed b\u011bhem 1\u201324 hodin [&hellip;]<\/p>\n","protected":false},"featured_media":55461,"template":"","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false},"product_brand":[],"product_cat":[185,191,182],"product_tag":[],"class_list":["post-53060","product","type-product","status-publish","has-post-thumbnail","product_cat-residential-chemicals","product_cat-residential-repair-products","product_cat-residential-solutions","first","instock","purchasable","product-type-simple"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Leak Sealer F4 je prost\u0159edek k ut\u011bsn\u011bn\u00ed vnit\u0159n\u00edch net\u011bsnost\u00ed, vyvinut\u00fd pro pou\u017eit\u00ed v cel\u00e9m syst\u00e9mu \u00fast\u0159edn\u00edho topen\u00ed k ut\u011bsn\u011bn\u00ed mal\u00fdch, nep\u0159\u00edstupn\u00fdch net\u011bsnost\u00ed a prosak\u016f, kter\u00e9 mohou zp\u016fsobit pokles tlaku a poruchu kotle. Jakmile se p\u0159\u00edpravek rozpt\u00fdl\u00ed v syst\u00e9mu, vyhled\u00e1 m\u00edsto pronik\u00e1n\u00ed kysl\u00edku a vytvo\u0159\u00ed polymer, kter\u00fd tuto d\u00edrku ut\u011bsn\u00ed. \u00da\u010dinek se projev\u00ed b\u011bhem 1\u201324 hodin\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/fernox.com\/cz\/residential-solutions\/leak-sealer-f4-express-400ml\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.1.1\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_GB\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Fernox Czech - Inovativn\u00ed \u0159e\u0161en\u00ed pro modern\u00ed syst\u00e9my vyt\u00e1p\u011bn\u00ed.\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Leak Sealer F4 Express 400ml - Fernox Czech\" \/>\n\t\t<meta property=\"og:description\" content=\"Leak Sealer F4 je prost\u0159edek k ut\u011bsn\u011bn\u00ed vnit\u0159n\u00edch net\u011bsnost\u00ed, vyvinut\u00fd pro pou\u017eit\u00ed v cel\u00e9m syst\u00e9mu \u00fast\u0159edn\u00edho topen\u00ed k ut\u011bsn\u011bn\u00ed mal\u00fdch, nep\u0159\u00edstupn\u00fdch net\u011bsnost\u00ed a prosak\u016f, kter\u00e9 mohou zp\u016fsobit pokles tlaku a poruchu kotle. Jakmile se p\u0159\u00edpravek rozpt\u00fdl\u00ed v syst\u00e9mu, vyhled\u00e1 m\u00edsto pronik\u00e1n\u00ed kysl\u00edku a vytvo\u0159\u00ed polymer, kter\u00fd tuto d\u00edrku ut\u011bsn\u00ed. \u00da\u010dinek se projev\u00ed b\u011bhem 1\u201324 hodin\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/fernox.com\/cz\/residential-solutions\/leak-sealer-f4-express-400ml\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/fernox.com\/cz\/wp-content\/uploads\/sites\/12\/2020\/11\/cropped-fernox-Logo-transparent.png\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/fernox.com\/cz\/wp-content\/uploads\/sites\/12\/2020\/11\/cropped-fernox-Logo-transparent.png\" \/>\n\t\t<meta property=\"og:image:width\" content=\"664\" \/>\n\t\t<meta property=\"og:image:height\" content=\"150\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2026-09-07T03:00:37+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2026-09-07T03:00:41+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Fernoxcesko\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:site\" content=\"@Fernox\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Leak Sealer F4 Express 400ml - Fernox Czech\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Leak Sealer F4 je prost\u0159edek k ut\u011bsn\u011bn\u00ed vnit\u0159n\u00edch net\u011bsnost\u00ed, vyvinut\u00fd pro pou\u017eit\u00ed v cel\u00e9m syst\u00e9mu \u00fast\u0159edn\u00edho topen\u00ed k ut\u011bsn\u011bn\u00ed mal\u00fdch, nep\u0159\u00edstupn\u00fdch net\u011bsnost\u00ed a prosak\u016f, kter\u00e9 mohou zp\u016fsobit pokles tlaku a poruchu kotle. 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