Nulon Radiator & Engine Block Stop Leak 500ml (Pickup Only)

Nulon Radiator & Engine Block Stop Leak combines DuPont Kevlar fibre with liquid resin to deliver a powerful, long-lasting repair solution. Designed to permanently seal leaks in radiators, inlet manifolds and engine blocks – including cracks, leaking welch plugs and failing gaskets – all without the need for expensive mechanical work. Its advanced microfibre technology actively targets small leaks and cracks that lead to coolant loss, pressure drops and overheating.

DuPont Kevlar fibres work by meshing together to block the leak or crack, which is then locked in place with a hardened liquid glass resin for a permanent, watertight result. Suitable for use in cars, trucks, vans, utes and light commercial vehicles, Nulon Radiator & Engine Block Stop Leak is safe for all plastic, aluminium and metal (copper/steel) radiators, heater cores, gaskets and welch plugs.

Compatible to mix with all glycol and water based coolants

Benefits

• Seals radiator and inlet manifold leaks and cracks, welch plugs and leaking gaskets and pipe leaks fast
• Contains DuPont Kevlar fibre and liquid glass resin for the ultimate permanent water tight seal
• Stops leaks from small pinholes (up to 0.8mm diameter) and small cracks (up to 0.8mm width) in any cooling system
• Saves costly mechanical repairs Maintains cooling system pressure and temperature to prevent overheating
• Safe to use with all types of glycol anti-freeze/anti-boil coolants and water based corrosion inhibitors