Dynamic shaft seal

US11885416B2 · kind B2 · utility

Assignee

• Carl Freudenberg KG · DE

Inventors

• Jasmin Menzel · Weinheim, DE
• Boris Traber · Hirschberg, DE
• Matthias Adler · Heppenheim, DE
• Eva Fleischmann · Hähnlein, DE
• Christine Portela Cubillo · Emmelshausen, DE

Key dates

• Filing date: Jul 23, 2020
• Grant date: Jan 30, 2024
• Expiry date: Jul 23, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/0025
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a dynamic shaft seal which comprises (a) elastomer material and (b) graphene without a chemically modified surface in an amount of from 0.1 to 2 phr, in relation to 100 parts by weight of the elastomer material, as the sole constituent of the dynamic shaft seal made of elemental carbon.