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Slide rings and mating rings are the two main components of a slide-ring seal. The slide ring and mating ring are in constant contact. However, they do not touch one another but slide over each other. One of the two rings sits rigidly in the stationary part/housing (usually the mating ring). The other is attached to the rotating shaft (usually the slide ring). The axially flexible sealing ring of a slide-ring seal is defined as a slide ring - it is pressed against the mating ring by a spring. They are also referred to as mating pairs. They can be made from the same material, but different materials are often also used to form the mating pairs.

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Solutions - Slide ring

Ceramic materials have largely replaced metallic materials in slide-ring seals such as chromium castings, chromium molybdenum castings and nickel chromium molybdenum steel due to their better tribological properties.
Corrosion resistance, resistance to aggressive media, resistance to pressure and wear resistance are the key properties of the materials required for this products. At the same time, frictional resistance must be kept to a minimum.
Doceram therefore uses aluminium oxide A-132 for this application.

Compatible Materials


ZrO2-MgO is a high-performance ceramic made of zirconium oxide partially stabilised with magnesium oxide. Our newly developed DOCERAM ZM-131 extends our material portfolio in the field of zirconium oxide ceramic materials.