The pumps, which are coated according to the Kepla-Coat process, generate high and ultra-high vacuum. They are used as a sealing element to connect pumps with vacuum plants.

Ceramic coating allows aluminium sealing elements in turbomolecular pumps to transmit torques to the system that occur in the case of a rotor-stator crash.

Kepla-Coat is a plasma-chemical anodising process producing greyish-white oxide layers in an aqueous electrolyte solution under spark discharge.

With the Kepla-Coat technique, it is also possible to produce deep black, light-resistant oxide ceramic layers that are suited for a dispersion of materials to improve sliding friction.