Fernox F4 Central Heating Leak Sealer - 500ml

Kudos Trading (17175)
99.4% positive Feedback
Price:
£29.99
Free next day delivery
Estimated by Wed, 30 Apr
Ships today if you order in the next Ships today if you order in the next 8h 33m
Energy Rating:
Returns:
60 days return. Buyer pays for return postage. If you use an eBay delivery label, it will be deducted from your refund amount.
Condition:
New
---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.

About this product

Product Identifiers

BrandFernox
MPN56603
EAN5014551566033, 0798256172106, 5014551999800
eBay Product ID (ePID)21011030109

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Ratings and reviews

4.5
22 product ratings
  • 17 users rated this 5 out of 5 stars
  • 2 users rated this 4 out of 5 stars
  • 1 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 2 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

  • Worked for the first day and then leak continued

    Put in to the system worked for the first day by holding pressure on the second day of using the central heating pressure dropped off again and never regained so I cannot really recommend this product

    Verified purchase: YesCondition: New

  • Worked brilliantly for us!

    Tried this after a very honest boiler repair man advised us to try it as our boiler was losing pressure slowly over a week or so. Added the sealer to the system via a towel rail radiator as per instructions, and our boiler has since held pressure firmly over the last 2 weeks. Well worth a try if you’re having similar issues, very impressed with the product!

    Verified purchase: YesCondition: New

  • Does the job

    Great product. Does what it says. My boiler was losing pressure and now, after more than 2' months, everything looks good. If you have a bigger system is better to use 2 bottles, like I did.

    Verified purchase: YesCondition: New

  • It works !

    Well it took a couple of days to work - however - its working now and has saved a lot of hassle and money as well, would recommend without any doubt.

    Verified purchase: YesCondition: New

  • Leak stopper

    Easy to use, and doe''s what it say's

    Verified purchase: YesCondition: New

  • Great

    Saved me so much work and money.l had a small leak for about a year I was going to have to remove my bath and floor to trace leak.now I don’t have to.

    Verified purchase: YesCondition: New

  • Good product

    Does the job it says. Straight forward to add to a conventional system.

    Verified purchase: YesCondition: New

  • Brilliant

    Awesome stuff, easy to install. Boiler holding pressure after 24 hours.

    Verified purchase: YesCondition: New

  • Great, beats ripping up the floor boards.

    As they say "it does what says on the tin" or plastic bottle in this case.

    Verified purchase: YesCondition: New

  • Boiler leak sealer

    Verified purchase: YesCondition: New