Sealing arrangement
AssigneeFirma Carl Freudenberg
InventorRolf Vogt
Life of this patent
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Abstract
A sealing arrangement, including a surface to be sealed off of a rotationally symmetrical machine element and a radial shaft sealing ring. The sealing ring has a sealing lip made of polymer material, which contacts the surface along a sealing edge that is formed of two mutually intersecting conical surfaces, the first conical surface, facing the space to be sealed off, forming a steeper angle with the axis of rotation than the conical surface facing away from it. A spiral-shaped groove having a rounded groove bottom is recessed into the surface, the groove bottom has a radius of curvature of 0.4 to 1.6 mm, and the depth of the groove is less than 15 μm.
Claims10
A sealing arrangement, comprising:
- a rotationally symmetrical machine element having a surface against which a seal is to be provided along a region of the surface bearing a groove, the groove having a rounded groove bottom that is recessed into the surface, the groove bottom having a radius of curvature of 0.4 to 1.6 mm, and the groove having a depth of less than 15 μm;
- and
- a radial shaft sealing ring having a polymeric sealing lip which contacts the surface of the machine element that bears the groove via a sealing edge that is formed by two intersecting conical surfaces, the first conical surface, facing in the direction of a space to be sealed off, having a steeper conical angle with respect to the axis of rotation of the machine element than the conical surface facing away therefrom.
Dependencies are inferred from the claim text.