Würth Radiator Sealant for Cooling Systems without Filter Systems
Würth Radiator Sealant for Cooling Systems without Filter Systems
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23 in stock
Key Features
- Seals hairline cracks and leaks permanently in radiators, cylinder heads, engine blocks, and hose connections.
- Prevents loss of cooling water, protecting against overheating and potential engine damage.
- Safe for the system - does not attack rubber, plastic, or common radiator materials.
- 300ml can treats up to 10 litres of coolant (maximum mixing ratio of 1:100 for trucks).
- Easy to apply directly to the cooling system with no disassembly required.
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Description
Permanent Leak Protection for Cooling Systems
Würth Radiator Sealant is a glycol-based sealing additive designed to provide long-lasting protection against coolant leaks in systems without filter strainers. It works by circulating with the coolant and lodging in hairline cracks, porous areas, and small leakage points, forming a durable seal.
Protection Against Engine Damage
By preventing coolant loss, this sealant helps to maintain stable operating temperatures, reducing the risk of overheating, gasket damage, and costly repairs. It also protects the combustion chamber from coolant ingress.
Safe and Compatible
The formulation is carefully designed not to impair the materials typically used in radiator and cooling system construction. It is compatible with rubber hoses, plastic fittings, and metals, ensuring safe and reliable sealing.
Application-Specific
This product must not be used in systems with filter strainers, as the sealing particles could obstruct flow.
More Information
Application Instructions
- Shake the can well before use.
- Add the entire contents (300ml) directly into the warm cooling system.
- Open radiator valves and let the engine run for at least 10 minutes to circulate the sealant.
- After treatment, check the coolant level and system tightness.
- For trucks, maintain a maximum mixing ratio of 1:100.
Usage Notes
- Only for use in cooling systems without filter strainers.
- Treats up to 10 litres of coolant in passenger vehicles.
- Designed for hairline cracks and micro-leaks - not suitable for major structural damage.
Specifications
Chemical Basis: Ethylene glycol
Colour: Green, Blue
Fragrance: Fruity
Contents: 300 ml
Density: 1.01 g/cm³ (at 20 °C)
pH Value: 9.76
Shelf Life: 24 months from production (store sealed, cool, and dry)