LOW-FRICTION DYNAMIC SEAL

摘要

A sealing arrangement, for sealing of a radial gap between relatively rotatable inner and out components, whereby the inner component is rotational about an axis of rotation and the outer component is coaxially arranged around the inner component. The sealing arrangement comprises: a dynamic seal part mountable to the inner component; a static seal part mountable to the outer component; and first and second labyrinth seals, each being formed by a gap between at least one set of opposing surfaces on the static and dynamic seal parts, and a lip seal arranged radially between the first and second labyrinth seal. The lip seal comprises a sealing lip connected to the dynamic seal part and bears against a radially oriented counterface on the static seal part. The sealing lip has a longitudinal extension in a radial cross section that extends towards the rotation axis at an angle between 10° and 80°.

主权项

1. A sealing arrangement, for sealing a radial gap between a relatively rotatable inner component and an outer component, wherein the inner component is rotational about an axis of rotation and the outer component is coaxially arranged around the inner component, the sealing arrangement comprising:
a dynamic seal part that is mountable to the inner component; a static seal part that is mountable to the outer component; a first labyrinth seal and a second labyrinth seal, each of the first labyrinth seal and the second labyrinth seal are formed by a gap between at least one set of opposing surfaces on the static and dynamic seal parts; a lip seal, wherein the lip seal is arranged radially between the first labyrinth seal and the second labyrinth seal, wherein the lip seal comprises a sealing lip which is connected to the dynamic seal part, wherein the lip seal bears against a radially oriented counterface on the static seal part, wherein the sealing lip has a longitudinal extension in a radial cross section that extends towards the rotation axis at an angle of between 10° and 80°.