Patent ID: 11885416
Assignee: CARL FREUDENBERG KG
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC F  C | IPC C  F

Claim 8:
9. A tribological system, comprising:
(A) a shaft, and
(B) a dynamic shaft seal sealingly adjacent to the shaft, the dynamic shaft seal comprising an elastomeric material and graphene without a chemically modified surface,
wherein the dynamic shaft seal comprises the graphene without the chemically modified surface in an amount of the 0.1 to 2 phr, based on 100 parts by weight of the elastomeric material, as the sole elemental carbon component of the dynamic shaft seal, and
wherein the dynamic shaft seal is a lip seal having a seal lip, which is in radial contact with the shaft during operation, the lip seal having two different seal edge angles.