MC4 Leak Sealer is an effective high performance solution from the industry leaders in central heating system maintenance and water treatment.
It is designed to seal leaks and weeping joints and is suitable for all sealed and open vented central heating systems, old and new.
- High performance leak sealer
- Seals inaccessible leaks and weeping joints
- Reduces pressure loss on sealed systems
- Avoids costly maintenance repairs
- No blocked pumps, valves or air vents