Fernox Central Heating Leak Sealer F4 500ML

Emergency leaks and system pressure loss can be resolved efficiently with the application of specially designed internal leak sealers to combat small leaks and weeps in sealed systems. Fast acting, these products reduce repair and cleaning costs without causing blockages or pump seizure. External leak sealers such as silicone pastes are ideal for use on compression joints and screw fittings to secure pipework.

• Ideal for reducing pressure loss from sealed systems
• Seals most weeps and small inaccessible leaks
• Saves time and money on draining down and repairing
• Does not cause blockages of pump, air vents etc.
• Compatible with all metals and materials commonly used in central heating systems
• 500ml