A:AnswerThe manufacturer pamphlet says" This mandoline is built of quality stainless steel and is designed for low maintenance and long product life.. it is dishwasher safe, but we recommend hand-washing to prolong the life of the mandoline even further. " Hope this helps. I wouldn't have issues with putting it on the top rack of the dishwasher. Usually do a once or twice trial run and see how my new products fair. I have found with products that contain plastic or rubber that have not been created to use as a heat resistant item...are not best suited for the dishwasher. Not all plastics are created equal! Have a great day.