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Fernox F4 Central Heating Leak Sealer - 500ml
Plumb2u (69590)
99.2% positive Feedback
Price:
£21.99
Free postage
Ships today if you order in the next Ships today if you order in the next 2h 44m
Returns:
30 days return. Buyer pays for return postage. If you use an eBay delivery label, it will be deducted from your refund amount.
Condition:
Fernox 56603 F4 Central Heating Leak Sealer Internal 500ML Fernox leak sealer F4 liquid is an ideal solution for reducing pressure loss from sealed systems. Leak Sealer F4 works best in warm/hot circulating water and once evenly dispersed will usually be effective within 1 - 24 hours.
- Buy it nowFernox 56603 F4 Central Heating Leak Sealer Internal 500ML
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About this product
Product Identifiers
BrandFernox
MPN56603
EAN5014551566033, 0798256172106, 5014551999800
eBay Product ID (ePID)21011030109
All listings for this product
Ratings and reviews
Most relevant reviews
- 29 Dec, 2019
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 productVerified purchase: YesCondition: New
- 04 Sep, 2023
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
- 11 Aug, 2021
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
- 03 Feb, 2021
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
- 25 Oct, 2018
Leak stopper
Easy to use, and doe''s what it say'sVerified purchase: YesCondition: New
- 05 Mar, 2023
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
- 30 Jul, 2020
Good product
Does the job it says. Straight forward to add to a conventional system.Verified purchase: YesCondition: New
- 17 Nov, 2020
Brilliant
Awesome stuff, easy to install. Boiler holding pressure after 24 hours.Verified purchase: YesCondition: New
- 23 Apr, 2020
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
- 27 Jan, 2021
Boiler leak sealer
Verified purchase: YesCondition: New
