Rislone Liquid Copper Block Seal

Rislone Liquid Copper Block Seal

One Step, No Draining Required
Antifreeze Compatible Sodium Silicate Formula
Permanent Cooling System Repair
Works with All Types of Antifreeze or Water

It’s part of life: older cars, trucks, vans, SUVs and even RVs can develop large leaks in their radiators and intake manifolds. If you’ve tried regular stop leak products you know they are not powerful enough to stop these larger leaks. That’s why Rislone designed the Liquid Copper Block Seal Intake & Radiator Stop Leak. This one-step sealer was designed to quickly and safely stop these overwhelming leaks.

What’s it do? Our formula permanently repairs larger leaks in radiators, intake manifolds and gaskets, heater cores, blocks, heads and freeze plugs. It contains an antifreeze-compatible sodium silicate liquid glass formula, so no draining of the cooling system is required. Not to mention, it will not harm the cooling system when used properly.

Their stop leak products can’t get your show back on the road like Rislone — that’s why we’ve been the most trusted stop leak brand since 1947. Make sure to watch Bobby and Caitlin in our handy how-to video so you can become a “three- minute mechanic” and finally take control of that leak.
Part Number: 41109
Dosage: Use – 1/2 (half) bottle in a small cooling system, such as 4 cylinders with no A/C. Use 1 (one) bottle for regular size systems, which are for most 4, 6, 8 and 10 cylinder engines.
Size: 510 g