ALUMASEAL® Stop Leak
- Seals leaks without clogging cooling system passages.
- Safe on all metal, plastic and rubber parts.
- Compatible with all coolants/antifreeze.
- Suitable for all liquid cooled engines.
- Seals leaks permanently.
- Works in minutes.
Stops Radiator & Heater Core Leaks Safely & Effectively.
ALUMASEAL® has been sealing radiator and heater core leaks for over 75 years. Today's products feature modern state-of-the-art formulas for unbeatable leak stopping performance. ALUMASEAL® is safe and compatible with ALL antifreeze and coolants (green, orange, yellow or G-05, etc.), and with ALL metal, plastic and rubber parts.
20g Powder Tube