The Adey MC4 Leak Sealer 500ml (CP1-03-00998) is a highly concentrated, high-performance leak sealer that protects and seals from the inside. It infiltrates hard-to-reach places to seal small, inaccessible leaks and weeping joints, reducing the need for a more costly repair. One dose could be all it takes to fix the leak and restore pressure.
One 500ml bottle gives effective treatment for a typical 100 litre / ten radiator system. MC4 reduces pressure loss on sealed systems, leaves no blocked pumps, valves or air vents, is suitable for all heating systems and non-hazardous, non-toxic and biodegradable. Dose it through a MagnaClean canister, a radiator or the F&E tank; no preparation is required and the heating can be used as normal afterwards.
100L
Typical system treated
All systems
Heating compatible
CP1-03-00998
Manufacturer part code
Dose through MagnaClean
To introduce MC4, Adey recommends dosing through the MagnaClean canister, or alternatively via a radiator or the F&E tank. For long-term system protection, use MC4 together with ADEY MC1 Protector.
For small leaks only
MC4 seals small leaks and weeping joints; larger failures still need a proper repair. For larger systems, use further MC4 as required. Do not use in single feed indirect cylinders.
Handling and storage
Classified as non-hazardous, but as with all domestic chemicals avoid contact with eyes and skin and keep out of reach of children. Store in a cool, well-ventilated area, tightly closed and in the original packaging.
Key features
Seals from the inside
Flows around the system to seal small inaccessible leaks and weeping joints in places that are hard to reach.
Restores pressure
Helps reduce pressure loss on sealed systems; one dose could be all it takes to restore pressure.
No blockages
Formulated so there are no blocked pumps, valves or air vents.
No preparation needed
No preparation is required, and you can use your heating as normal after dosing.
Dose through MagnaClean
Add via the MagnaClean canister (recommended), or alternatively through a radiator or F&E tank.
Highly concentrated and safe
A highly concentrated formula that is non-hazardous, non-toxic and biodegradable, and avoids costly maintenance repairs.
Specifications
Product
Manufacturer part code
CP1-03-00998
Product type
Central heating leak sealer
Performance and application
Dose
500ml treats a typical 100 litre / ten radiator system
Larger systems
Use further MC4 as required
System types
All heating systems
Dosing routes
MagnaClean canister (recommended), radiator or F&E tank
Preparation
None required; use heating as normal after dosing
Long-term protection
Use with ADEY MC1 Protector
Physical and chemical properties
Appearance
Viscous emulsion
Solubility
Dispersible in water
pH (concentrated solution)
7.0
Environmental and quality
Classification
Non-hazardous, non-toxic and biodegradable
Quality systems
ISO 9001 and ISO 14001
Restrictions
Not suitable for
Single feed indirect cylinders
Frequently asked questions
What size of leak will MC4 seal?
MC4 is designed for small, inaccessible leaks and weeping joints. Larger leaks need a proper repair.
How much MC4 do I need?
A 500ml bottle gives effective treatment for a typical 100 litre / ten radiator system. For larger systems, use further MC4 as required.
How do I add MC4?
Adey recommends dosing through the MagnaClean canister. Alternatively, dose via a radiator or the F&E tank. No preparation is required.
Can I use the heating straight after dosing?
Yes. Adey states that no preparation is required and you can use your heating as normal after dosing.
Will it block pumps, valves or air vents?
No. It is formulated so there are no blocked pumps, valves or air vents. It should not be used in single feed indirect cylinders.
