{"product_id":"fernox-57883-f4-leak-sealer-1-pint","title":"Fernox 57883 F4 Leak Sealer - 1 Pint","description":"\u003cp\u003eFernox 57883 is a 1 pint bottle of F4 Leak Sealer, an internal sealer for small, inaccessible leaks in central heating systems.\u003c\/p\u003e\u003cp\u003eOnce dispersed in the system, F4 finds the point where oxygen enters and forms a polymer to seal pinhole leaks and weeps. Fernox states it is effective within 1 to 24 hours, can be added without draining down, is compatible with all metals including aluminum and is left permanently in the system. One pint treats up to 34 gallons of system water, about 16 radiators.\u003c\/p\u003e\u003cp\u003eA sealer is meant for small leaks and pressure loss in sealed systems, not for failed joints or large leaks, which still need a mechanical repair. Calculate the system's water volume to confirm one pint is enough, and read the Safety Data Sheet before handling.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Fernox\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part #:\u003c\/strong\u003e 57883\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Leak Sealer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 1 Pint\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTreats:\u003c\/strong\u003e Up to 34 gallons of system water\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Water Treatment, Anti-Freeze \u0026amp; Condensate\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDocuments\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/res.cloudinary.com\/dzhpkjoqj\/Fernox\/62563_US_EN_rxxect.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSafety Data Sheet (SDS)\u003c\/a\u003e (PDF)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/res.cloudinary.com\/dzhpkjoqj\/Fernox\/Leak-Sealer-F4-2.6-US-Gallons-EN-US_b0mrpo.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSubmittal Sheet\u003c\/a\u003e (PDF)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSee also: \u003ca href=\"\/collections\/water-treatment-anti-freeze-condensate\"\u003ewater treatment, anti-freeze and condensate\u003c\/a\u003e, \u003ca href=\"\/collections\/fernox\"\u003eall Fernox products\u003c\/a\u003e.\u003c\/p\u003e","brand":"Fernox","offers":[{"title":"Default Title","offer_id":50357536718951,"sku":"FERX-57883","price":78.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0651\/2253\/3479\/files\/image_lmypia.jpg?v=1790829077","url":"https:\/\/www.thehousesupplier.com\/products\/fernox-57883-f4-leak-sealer-1-pint","provider":"The House Supplier","version":"1.0","type":"link"}