Safety first: Ensure the cooker is cool and unplugged before handling the gasket.

Inspect gasket: Check for stretching, cracks, or hard spots. A loose gasket will not seal properly.
Try reseating: Press the gasket firmly into the lid groove all the way around. If it pops out easily, it is likely worn.
Replace gasket: Purchase a genuine KitchenAid replacement gasket specified for your model and install it according to the manual.
Care for new gasket: Hand wash and avoid harsh chemicals to extend its life.

Silicone gasket is loose, stretched, or will not stay in the lid groove.

Possible Causes