Vacuum Insulated Food Jars - FAQ

This can happen if the gasket is installed incorrectly. Please check that the stopper packing is placed at the bottom of the stopper.

When the food jar is filled with hot foods, the drop in temperature as the food cools creates pressure that may cause the lid to be a little harder to remove than usual. The lids on Zojirushi food jars have been engineered to relieve this pressure. While opening the lids for the SW-K series food jars, you may feel slight resistance when opening it. This is the lid automatically relieving the pressure as you open the lid. In the case of all other models, a small release valve is integrated into the lid. To ease the opening process, simply take a toothpick and gently push the valve to release the pressure, allowing the lid to open smoothly.

The food jar and all its components are NOT dishwasher safe. We recommend handwashing them with a mild dishwashing liquid and a soft sponge and letting them fully dry before their next use. For detailed instructions on how to care for your Zojirushi food jar, please refer to the instruction manual.

Replacement parts may be ordered from our online page. Please check the model number at the bottom of the food jar to ensure that a correct part is purchased.

Zojirushi SlickSteel® Finish is an alternative to our nonstick coating. They are non-coated on the inside and instead use an electrically charged polishing process to treat and finish the interior. The result is a corrosion-resistant surface that repels foreign substances and stains, creating a smooth and ultra-clean stainless steel environment for your food and beverages.

Preheat or precool your food jar by filling it with hot or cold water, attach the stopper, and let it stand for at least five minutes. Empty the water and fill it with your food or beverage.

The interior of all our food jars is made of high-quality stainless steel and is BPA-free. Stoppers, mouth rings, and all other plastic parts are also BPA-free.

Always rinse out your food jar after each use and rinse the stopper under running water. Do not soak the food jar in water or place it in a dishwasher to clean. The exterior can be cleaned using a moist sponge or soft cloth and mild dishwashing liquid. The interior can be cleaned using a mild dishwashing liquid and then rinsed thoroughly. Please refer to your instruction manual for more.

The Stainless Steel Food Jar SW-GCE36 has a fill line inside indicating how much can be filled. Overfilling your food jar above this fill line may cause contents to leak or the lid to open accidentally and could be dangerous.