Mixture of seven organic ingredients designed to permanently seal holes and cracks in radiators water jackets and cylinder heads. Just pour into the radiator while the engine is running it seeks out holes and swells shut as soon as it comes in contact with air. Will not re-dissolve and draining or flushing will not affect the seal.

PERM-O-SEAL

COOLING SYSTEM STOP LEAK

PERMANENT SEAL

NON-TOXIC

Carded