Yes, they are! But if it needs to be washed in the dishwasher, we recommend applying the sticker to plastic or textured surfaces like metal and ceramic.
Also, make sure the sticker cools and dries completely after each dishwasher cycle, as it could shift when it is still hot.
Keep in mind that UV DTF transfer stickers, when applied on glass are not dishwasher-safe, but they are still waterproof and safe for handwashing.