How to prevent the Moka pot from leaking?

Based on the given search results, here are some ways to prevent a Moka pot from leaking:

1. Make sure the top and bottom chambers are tightly aligned and screwed together.
2. Check and replace the rubber gasket if necessary.
3. Apply vegetable oil to the screws to help seal the pot.
4. Wash the Moka pot after each use and use distilled water when making coffee.
5. Clean the exterior of the Moka pot with water and mild soap.
6. Use the right grind size for your coffee beans.

In addition, some users have suggested reducing the heat after the water starts making noise and tightening the pot more securely to avoid leakage. It may be necessary to experiment to find the method that works best for your specific Moka pot.