

Miracle Seal Cooling System Leak Sealer & Corrosion Inhibitor 250ml | Radiator & Hose Leak Protection | Water-Based Formula | Compatible with All Water Coolants (1 Pack)
About this item
- FAST LEAK CONTROL FOR COOLING SYSTEMS: Designed to help reduce small leaks in radiators, hoses, water pumps and cooling circuits, supporting continued operation while helping to maintain cooling system efficiency.
- NON-CLOGGING WATER-BASED FORMULA: Advanced suspension with fine sealing particles designed to circulate freely, helping avoid blockages in radiators, heater matrices or pipework when used as directed.
- COMPATIBLE WITH ALL WATER-BASED COOLANTS: Suitable for use with standard water coolants and antifreeze mixtures, maintaining performance without affecting coolant flow, seals or mechanical components.
- ADDED CORROSION & LUBRICATION SUPPORT: Contains anti-corrosion and lubricating additives to help protect internal cooling system components, supporting longer service life and smoother operation.
- SUITABLE FOR METAL & PLASTIC SYSTEMS: Formulated for use in mixed material systems including aluminium, steel and plastic components commonly found in modern vehicle cooling systems.
- SIMPLE APPLICATION โ NO DISASSEMBLY REQUIRED: Easy pour-in solution applied directly to the radiator following basic preparation steps, making it suitable for routine maintenance or emergency situations.
Product description
Miracle Seal is a water-based cooling system additive developed to help manage minor leaks and support the ongoing performance of vehicle cooling systems. It uses a high-viscosity suspension of fine particles combined with corrosion-inhibiting and lubricating additives, designed to circulate safely through the system. The formula is engineered to work with all water-based coolants, including antifreeze mixtures, and is suitable for use in systems containing metal and plastic components. When used as directed, it helps maintain coolant flow without interfering with mechanical operation. Miracle Seal is commonly used as a preventative or corrective measure in radiators, hose connections, water pumps and general cooling circuits. Its neutral pH and fire-resistant properties support safe handling and system compatibility. Key features: Water-based, non-compressed liquid suspension Contains corrosion-inhibiting additives Includes lubrication support for system components Compatible with all water-based coolants Suitable for routine maintenance or emergency use Packaging: 250ml bottle โ suitable for systems up to 25 litres of coolant. Use only as directed. Always follow vehicle manufacturer guidance.
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What customers say about Bigamart
10 Trustpilot reviews total, with 2 shown at a time.
I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.
The package was here in Australia from England in a few days โ so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.
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