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

Claim 13:
14. A method of reducing abrasion comprising the steps of:
(i) providing a dynamic shaft seal comprising an elastomeric material and graphene without a chemically modified surface,
wherein the dynamic shaft seal comprise the graphene without the chemically modified surface in an amount of 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,

(ii) arranging the dynamic shaft seal such that the dynamic shaft seal is sealingly adjacent to a shaft; and
(iii) rotationally moving the shaft,
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 edge angles.