Carl Freudenberg Kg

Erich Prem

Rolf Vogt

Eberhard Bock

Boris Traber

Matthias Adler

Thomas Schnetz

Stefan Geiss

Friederike Von Fragstein

Katharina Hallstein

Stephan Rutz

Kai Feller

Holger Sattler

A method includes using a sealing element to dynamically seal a sealing body in the presence of a lubricant. The sealing element has an elastomeric base body and a plasma coating. The coating includes the elements carbon, oxygen, silicon, and hydrogen. The coating has the following properties at least at the surface: the amount ratio C:Si (at %/at %) is &#x3e;5, the amount ratio O:Si (at %/at %) is &#x3e;3, and the surface energy is &#x3c;50 mN/m. In an embodiment, the coating includes the element fluorine.

Plasma-coated sealing element

An arrangement includes a radial shaft seal () that surrounds a shaft (), wherein an elastomer body () forms a sealing lip () for bearing against the shaft (), wherein the sealing lip () has a sinusoidally curved sealing edge () on its side which faces the shaft (), which sealing edge runs around along the inner circumference of the sealing lip (), and wherein the sealing edge () bears against the circumferential face () of the shaft (). The radial shaft seal as a single component is able to produce high dynamic seal tightness in a plurality of different applications.

Arrangement with a radial shaft seal having a sinusoidally curved sealing edge

A sealing arrangement for sealing a machine element, preferably a shaft, with a sealing ring and leak-detection means that comprises a sensor for detecting the leak, and a depot for picking up the leak. The depot is monitored by the sensor and the depot consists of an absorbent and/or swellable material, and is arranged so as to permit delayed leak detection by the sensor.

Leak detection means

Growing community of inventors

Hemsbach, Germany

Erich Prem