The Adey MC4+ Rapide Leak Sealer 300ml (CH1-03-02039) is a highly concentrated, high-performance leak sealer that flows around the whole system and seals small, inaccessible leaks and weeping joints from the inside. The quick-dose bottle adds to the system in as little as 20 seconds.
MC4+ reduces pressure loss on sealed systems, leaves no blocked pumps, valves or air vents, and is suitable for all heating systems. It is non-hazardous, non-toxic and biodegradable, and a single dose can help you avoid costly maintenance repairs.
All systems
Heating compatible
Non-toxic
And biodegradable
CH1-03-02039
Manufacturer part code
Best dosed through MagnaClean
Add MC4+ Rapide via a radiator, air vent or the boiler filling loop in about 20 seconds. Adey always recommends dosing through a MagnaClean filter.
For small leaks only
MC4+ seals small leaks and weeping joints. Larger failures still need a proper repair. 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 entire system to seal small inaccessible leaks and weeping joints that are hard to reach.
Reduces pressure loss
Helps reduce pressure loss on sealed systems and restore pressure after a leak.
No blockages
Designed to leave no blocked pumps, valves or air vents.
Dosed in 20 seconds
The quick-dose bottle injects via a radiator, air vent or boiler filling loop in as little as 20 seconds.
Highly concentrated
A high-concentration formula that guarantees a strong seal, often with a single dose.
Avoids costly repairs
A simple way to avoid costly maintenance repairs; non-hazardous, non-toxic and biodegradable.
Specifications
Product
Product
MC4+ Rapide Leak Sealer
Manufacturer part code
CH1-03-02039
Pack size
300ml quick-dose bottle
Product type
Central heating leak sealer
Performance and application
Seals
Small, inaccessible leaks and weeping joints
System types
All heating systems
Dosing routes
Radiator, air vent or boiler filling loop; dosing via a MagnaClean filter recommended
Dosing time
As little as 20 seconds
Benefit
Reduces pressure loss on sealed systems; no blocked pumps, valves or air vents
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+ Rapide seal?
It is designed for small, inaccessible leaks and weeping joints. Larger leaks need a proper repair.
How do I add MC4+ Rapide?
Via a radiator, air vent or the boiler filling loop in as little as 20 seconds. Adey always recommends dosing through a MagnaClean filter.
Will it block pumps, valves or air vents?
No. It is formulated so there are no blocked pumps, valves or air vents.
Is it suitable for all heating systems?
Yes, it suits all heating systems, except single feed indirect cylinders where potable water treatment is required.
Is MC4+ hazardous?
It is non-hazardous, non-toxic and biodegradable. Standard care still applies: avoid eye and skin contact and keep out of reach of children.