FER-62422 | Leak Sealer F4 Express (aerosol) 400ml Type:Leak Sealer It is ideal for providing

It is ideal for providing a water repellent

- Eliminates radiator cold spots

further safeguarding system components and providing peace of mind to both professionals and homeowners alike

modified polymer primer

FER-62422 | Leak Sealer F4 Express (aerosol) 400ml Type:Leak Sealer It is ideal for providingEasy application method: Fernox F4 Leak Sealer Express 400ml is designed for a quick, simple, and hassle free application. With its unique pressurized canister, it can be directly introduced into a heating system without the need for draining or disassembly, saving time and effort. Seals small leaks effectively: This product is specifically formulated to seal small, inaccessible leaks and weeps which can cause pressure loss in your central heating