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Fernox F4 Leak Sealer 500Ml
by Fernox
£24.00from 2 retailers
GTIN05014551566033
EAN5014551566033
MPN5014551566033
Prices updated 25 Aug 2026
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Save up to £8.76 by comparingPrices checked 2d ago
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£24.00
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In stock£20.00 deliverySTANDARD
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Product Description
Seal small, inaccessible leaks and weeps in a central heating system with Fernox F4 Leak Sealer. There is no need to drain down the system before use, and once dispersed, it will be effective 1 to 24 hours after application.
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