MANNOL 9966 Radiator Leak-Stop 250ML
Cooling System Leak-Stop

MANNOL 9966 Radiator Leak-Stop 250ML

Cooling system sealant designed to help eliminate small leaks and micro cracks in radiators, gaskets, water pumps and other compatible cooling-system components.

$28.13
SKU: AD9966
✓Cooling System Sealant
✓Radiator & Gasket Leak Support
✓Compatible with Coolant & Water
✓For Liquid-Cooled Engines
Fast Shipping Secure Checkout Professional Grade
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COOLING SYSTEM LEAK CONTROL

Helps seal leaks through compatible gaskets, clamps, radiator cracks, water pumps and other cooling-system components.

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MICRO-CRACK SEALING

Designed to target small cracks and hard-to-locate micro leaks that can cause gradual coolant loss.

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SEAL & GASKET CONDITIONING

Helps restore elasticity and resilience of compatible seals and gaskets while reducing ageing and cracking.

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MATERIAL COMPATIBILITY

Suitable for compatible aluminum, copper, plastic, composite, rubber and other cooling-system materials.

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Product Information

A special additive in the coolant is a sealant for the cooling system of internal combustion engines (ICE) and the interior heating system. Suitable for any liquid-cooled internal combustion engine with radiators made of any materials (aluminum, copper, plastic and composite, etc.). It is a mixture of metal polymers and special fibers and is designed to eliminate leaks in the system.

Product properties:

• Compatible with any coolant as well as water;
• Seals the cooling system and eliminates leaks through gaskets, clamps, small cracks in the radiator, cylinder head gaskets, from the water pump and from the cylinder block itself. Prevents leaks in the future;
• Cures only in places of leaks, without clogging the radiator tubes. After hardening, withstands vibration, temperature changes, does not wash out, does not dissolve;
• It is especially recommended for sealing micro cracks and micro leaks, the places of which are difficult to determine, but due to which there is a drop in the level of the coolant;
• Absolutely neutral to all structural materials (metals and alloys, plastic and rubber parts). Restores the lost elasticity and resilience of seals and gaskets, protects them from drying out, hardening, deformation and cracking, slowing down their aging and thereby extending their service life;
• Possesses excellent anti-corrosion properties, neutralizes corrosive acids;
• Extends the life of the water pump;
• Can be used to prevent leaks, as well as to prevent the aging process and wear of seals and gaskets, and in general to prevent cooling system failures.

Application:

Start the engine at idle speed and let it warm up to operating temperature, turn on the interior heating. Shake the contents of the bottle thoroughly and pour it into the expansion tank of the cooling system (or into the radiator). One 325 ml bottle is sufficient for a 12 liter system. Let the engine idle for 10 minutes. If the leaks are not eliminated within 3 days, mechanical repair is required.
Documents

Technical Downloads

1 file
PDF 9966_TDS.pdf Technical Data Sheet (TDS)
Perfect For
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LIQUID-COOLED ENGINES Suitable for compatible liquid-cooled internal combustion engines.
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RADIATOR LEAKS Suitable for helping seal small cracks and leaks in compatible radiators.
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SEALS & GASKETS Designed to support compatible gaskets, clamps and cooling-system seals.
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MICRO LEAKS Especially useful where coolant loss occurs from small leaks that are difficult to locate.
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LEAK-STOP SUPPORTHelps seal compatible cooling-system leaks and micro cracks.
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COOLANT COMPATIBLESuitable for use with coolant as well as water.
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MATERIAL SAFECompatible with common cooling-system metals, plastics and rubber components.
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SEAL CONDITIONINGHelps maintain elasticity and resilience of compatible seals and gaskets.

💧|LEAK-STOP SUPPORT|Helps seal compatible cooling-system leaks and micro cracks. ⚙️|COOLANT COMPATIBLE|Suitable for use with coolant as well as water. 🛡️|MATERIAL SAFE|Compatible with common cooling-system metals, plastics and rubber components. 🔧|SEAL CONDITIONING|Helps maintain elasticity and resilience of compatible seals and gaskets.

MANNOL 9966 Radiator Leak-Stop is a cooling-system sealant designed to help close small leaks and micro cracks, condition compatible seals and gaskets, and support reliable coolant retention in liquid-cooled engines.