![FERNOX Central Heating Leak Sealer F4 Express 400ml - Fast Results - 30 sec - (Replacement 58232) : Amazon.co.uk: DIY & Tools FERNOX Central Heating Leak Sealer F4 Express 400ml - Fast Results - 30 sec - (Replacement 58232) : Amazon.co.uk: DIY & Tools](https://m.media-amazon.com/images/I/31V4fAxoYrL._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingFOURANDHALF%2CBottomLeft%2C360%2C-6_SR600%2C315_ZA224%2C445%2C290%2C400%2C400%2CAmazonEmberBold%2C12%2C4%2C0%2C0%2C5_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)
FERNOX Central Heating Leak Sealer F4 Express 400ml - Fast Results - 30 sec - (Replacement 58232) : Amazon.co.uk: DIY & Tools
![400 ML Can, 30 Sec Setting Time, Faint Odor, Viscous Liquid, Aerosol, White F4 EXPRESS Water Treatment Leak Sealer | Design Air 400 ML Can, 30 Sec Setting Time, Faint Odor, Viscous Liquid, Aerosol, White F4 EXPRESS Water Treatment Leak Sealer | Design Air](https://cdn.designair.com/Images/Spirotherm_VDR100PFM_Image1-PROD.jpg)
400 ML Can, 30 Sec Setting Time, Faint Odor, Viscous Liquid, Aerosol, White F4 EXPRESS Water Treatment Leak Sealer | Design Air
![FERNOX Central Heating Leak Sealer F4 Express 400ml - Fast Results - 30 sec - (Replacement 58232) : Amazon.co.uk: DIY & Tools FERNOX Central Heating Leak Sealer F4 Express 400ml - Fast Results - 30 sec - (Replacement 58232) : Amazon.co.uk: DIY & Tools](https://m.media-amazon.com/images/I/31V4fAxoYrL._AC_.jpg)
FERNOX Central Heating Leak Sealer F4 Express 400ml - Fast Results - 30 sec - (Replacement 58232) : Amazon.co.uk: DIY & Tools
![400 ML Can, 30 Sec Setting Time, Faint Odor, Viscous Liquid, Aerosol, White F4 EXPRESS Water Treatment Leak Sealer | Design Air 400 ML Can, 30 Sec Setting Time, Faint Odor, Viscous Liquid, Aerosol, White F4 EXPRESS Water Treatment Leak Sealer | Design Air](https://cdn.designair.com/Images/Fernox_62438_Image1-PROD.jpg)