Sealing arrangement and sealing ring

US10648568B2 · kind B2 · utility

Assignee

• Carl Freudenberg KG · DE

Inventors

• Olaf Nahrwold · Ludwigshafen, DE
• Stefan Sindlinger · Weinheim, DE
• Frank Lauer · Wiesloch, DE
• Boris Traber · Hirschberg, DE
• Jasmin Menzel · Weinheim, DE
• Thomas Kramer · Herford, DE

Key dates

• Filing date: Sep 4, 2018
• Grant date: May 12, 2020
• Expiry date: Nov 14, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G01M13/005
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A sealing arrangement includes: a sealing ring having at least one dynamically loaded sealing lip, the sealing ring including a core comprised of an electrically conductive material and a casing comprised of an electrically insulating material, the casing having a material thickness, surrounding the core at least in part and including the sealing lip; a machine element to be sealed that has a surface to be sealed, which surface is electrically conductive and surrounded by the sealing lip in a radially prestressingly sealing manner; and a wear detector, which has an electric measurement device for detecting a state of wear of the sealing ring. When viewed in section, the material thickness of the sealing lip is smaller in a radial direction than the material thickness of a remainder of the casing.