A sealing device for insertion between a first and a second bearing part. The device including a rotating first shield, a stationary second shield, and an elastomeric sealing element having a first and a second sealing lip. The first shield includes a peripheral section having a first and a second axially extending sleeve portion connected by a first radially extending flange portion. The second shield including a support section for the lips, having an intermediate frustoconical portion that connects a second flange portion of the peripheral section to a mounting section of the second shield. The intermediate portion is positioned axially at a step formed by the first flange portion and by the first sleeve portion. The mounting section is arranged partially inside the second sleeve portion to form an axially directed labyrinth seal that is in metal-to-metal contact with the second bearing.

A method for the analysis of surface measurements, in particular scratch tests, wear tests or profilometric measurements, wherein a graph with displayable curves in the form of measuring curves of already analyzed results with an X-axis as a coordinate axis along a measuring path is laid over a live image or subsequently over a stored image of the measuring section such that the X-coordinates in the image coincide with the X-coordinates of the curves.