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Kudos-Trading - Fernox F4 Leak Sealer 500ml Liquid Seal for Central Heating Pipe Work Leaks Water Underfloor Heating Non-Corrosive Non-Toxic Compatible with Most Heating Systems Long-Lasting Seal

Description:

About this item:

  • Easy-to-use formula: Fernox F4 Leak Sealer is designed for quick and hassle-free application. It comes as a ready-to-use liquid that doesn't require any additional mixing or preparation, making it convenient for homeowners and professionals alike.
  • Effective sealing performance: This high-quality leak sealer is engineered to efficiently and reliably seal small, inaccessible leaks and weeping joints in hydronic heating systems. Its advanced formulation ensures a long-lasting and dependable sealing effect on various materials, including metal, plastic, and composite pipes.
  • Compatible with all metals and materials: The versatile Fernox F4 Leak Sealer is suitable for use in systems containing a wide range of materials, such as copper, brass, steel, iron, aluminium, and plastics. This makes it a perfect solution for diverse heating systems, regardless of their construction and components.
  • Non-toxic and environmentally friendly: Developed with safety and sustainability in mind, Fernox F4 Leak Sealer is non-toxic, non-corrosive, and non-flammable. Its eco-friendly formulation means that it is safe for use in all domestic heating systems and poses no harm to the environment.
  • Rapid dispersion and circulation: The liquid formulation of the Fernox F4 Leak Sealer allows for quick and even distribution throughout the system, ensuring that the product reaches all areas where leaks may be present. This rapid circulation ensures effective sealing and minimal downtime for your heating system.
  • Effective in both open and closed systems: Whether your heating system is an open-vented or sealed system, the Fernox F4 Leak Sealer is designed to deliver optimal sealing performance. Its versatility makes it a go-to solution for a wide range of system types.
  • Does not cause blockages or restrictions: Fernox F4 Leak Sealer's unique formulation prevents the formation of any solid residues, ensuring that it will not cause blockages or restrictions within the heating system. This means you can trust it to deliver excellent sealing without compromising the efficiency of your system.
  • Long-lasting protection: With its superior sealing performance and compatibility with a wide range of materials, Fernox F4 Leak Sealer provides long-lasting protection against leaks and weeping joints. This helps extend the lifespan of your heating system and minimize the need for costly repairs.

    • Review:

    4.8 out of 5

    96.92% of customers are satisfied

    5.0 out of 5 stars Great product fast service

    A.C. · 29 April 2025

    (function() { P.when('cr-A', 'ready').execute(function(A) { if(typeof A.toggleExpanderAriaLabel === 'function') { A.toggleExpanderAriaLabel('review_text_read_more', 'Read more of this review', 'Read less of this review'); } }); })(); .review-text-read-more-expander:focus-visible { outline: 2px solid #2162a1; outline-offset: 2px; border-radius: 5px; } This product is excellent at sealing small weeping joints in an old system

    5.0 out of 5 stars Effective stopping pressure drop

    A.C. · 5 March 2025

    Was sceptical about using but after a couple of days,my pressure,drop on my boiler has appeared to stop it may be a sticking plaster approach but ripping up the kitchen flooring wasn't an easy option neither

    4.0 out of 5 stars Does what i says on the plastic bottle but not for as long as I would want

    A.C. · 25 January 2025

    Definitely stops leaks but only seems to last for 8 to 12 months. So, a new application is required annually - not a big problem, as it’s probably as good as it gets regarding leak prevention in a radiator system.

    5.0 out of 5 stars Great leak sealer

    A.C. · 15 April 2025

    This company been around for years. Always used a range of products. Good results. Plumber for 44 years.

    5.0 out of 5 stars Leak Fixed!

    A.C. · 5 April 2025

    Seems to have fixed a leak I couldn't fix for the last 10 years!

    5.0 out of 5 stars Seems to have worked

    A.C. · 4 November 2024

    Our water pressure kept going down we had the engineer out and could not find anything wrong with the boilerThey said we had a small leak in the pipes that we could not get at and recommended we use this its been a few weeks now since we used it and so far so good no more pressure issues

    4.0 out of 5 stars Could save you loads and peace of mind.

    A.C. · 3 May 2025

    Solved a pressure loss problem that was unable to be located.Since installation, four months now, our system pressure has not had to be topped up once.

    5.0 out of 5 stars Most impressed

    A.C. · 9 April 2025

    This actually works…. Don’t forget to remove the radiator auto bleed/vent

    Très bien

    A.C. · 10 March 2025

    (function() { P.when('cr-A', 'ready').execute(function(A) { if(typeof A.toggleExpanderAriaLabel === 'function') { A.toggleExpanderAriaLabel('review_text_read_more', 'Read more of this review', 'Read less of this review'); } }); })(); .review-text-read-more-expander:focus-visible { outline: 2px solid #2162a1; outline-offset: 2px; border-radius: 5px; } Fait parfaitement le job

    Funciona de verdad

    A.C. · 26 February 2025

    Tenia una fuga en el circuito de la calefacción. Ni siquiera con una cámara térmica lo encontraron. Utilicé el producto según indicaciones y ya no ha vuelto a bajar la presión de la caldera

    Ottimo prodotto

    A.C. · 29 April 2025

    Ottimo rapporto qualità prezzo, egregio

    Perfetto

    A.C. · 24 January 2025

    Top

    Super produit tant pour l entretien que les fuites

    A.C. · 15 February 2025

    Les 5 étoiles sont méritées

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    Kudos-Trading - Fernox F4 Leak Sealer 500ml Liquid Seal for Central Heating Pipe Work Leaks Water Underfloor Heating Non-Corrosive Non-Toxic Compatible with Most Heating Systems Long-Lasting Seal

    4.4

    AED28806

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    Product origin: United Kingdom

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