| 摘要 |
A device for sealing the gap between a stationary housing and a rotating shaft includes a radial packing ring in a stationary mount in the housing, the packing ring having a sealing lip made of a polymer material that comes in contact with the shaft under an elastic prestress, and a pulse wheel is mounted upstream from the radial packing ring in the direction of the outside air, rotates with the shaft and has a pulse generator surrounding the shaft at a radial distance, and a sensor in a stationary mount for detecting rotational movements of the pulse wheel, the pulse generator (7) being formed by a cylindrical sleeve (24) having magnetic poles (8) facing radially outward or being composed of a generator wheel (13) having teeth (14) and spaces between the teeth on the outer circumference, and the sealing lip (9) is in the form of a ring disk due to the manufacturing method, and in the area of its inner circumference it becomes wider from the direction of the pulse wheel (7), its inner circumference engaging in the gap formed by the distance between the sleeve (24) and the shaft (3).
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