1. It is made of organic polymer materials, which is neutral and is of no corrosion to metals or rubber. 2. Added one time into the tyre and Stops up to 60 leakages. 3. It can cover the breach within 6mm. 4. Good leveling to automatically seek-out the leakage in seconds. 5. No volatile, non-flammable, anti-freezing. Long lasting effect.