A hearing apparatus includes a sound tube with a tube-side coupling element and an earpiece with an earpiece-side coupling element. The tube-side coupling element and the earpiece-side coupling element can be reversibly coupled. The tube-side coupling element has a tube-side pressure canal and the earpiece-side coupling element has an earpiece-side pressure canal, which form a coupled pressure canal in a coupled state of the coupling elements. The tube-side coupling element or the earpiece-side coupling element is supported by at least one pressure element which improves air-tightness of the coupled pressure canal. A coupling element and a hearing device are also provided.