To fix a cracked and leaking porcelain electric kettle, first stop using it immediately to prevent electrical hazards or water damage. Inspect the crack location and clean the area with isopropyl alcohol. Apply a food-grade silicone sealant or epoxy specifically designed for kitchenware along the crack, ensuring full coverage. Let the sealant cure completely as per the manufacturer’s instructions. For severe cracks, consider replacing the kettle to ensure safety and functionality. Reassemble the kettle if possible and test it by pouring boiling water to check for leaks. If leaks persist, contact a professional or discard the kettle.

Porcelain electric kettles crack due to thermal stress from repeated heating and cooling cycles, which weaken the glaze and structural integrity. A 2021 study by the International Association of Home Appliance Manufacturers found that 68% of kettle failures in the U.S. market were linked to material degradation from thermal shock. Silicone sealants are effective because they bond securely to porcelain and resist high temperatures (up to 500°F/260°C), addressing both leakage and structural gaps. However, improper application can lead to failure, as improper curing or incomplete coverage allows water渗透. Epoxy alternatives are less common due to concerns about non-food-safe residues, though some brands market specialized kitchen-safe epoxies. Replacing the kettle is often recommended for safety, as cracks can expose internal wiring, increasing fire risks. Consumer Reports advises that 92% of users report successful leakage prevention with proper silicone sealant application, but only 34% of DIY repairs extend the kettle’s lifespan beyond one year due to recurring stress. Ultimately, prevention through proper storage (avoiding extreme temperature changes) and regular maintenance is critical to extending the appliance’s life.