Abstract: In a U-cup based seal of a rod, the basic body of the U-cup 3 is recessed relative to a square cross-sectional shape in the region of a radially inner outer edge 18 on the low pressure side in order to obtain a space 17 between the U-cup 3 and the opening, i.e. the passage opening 16 of a sealing gap 15, leading into a rectangular groove 4 guiding the U-cup 3. This space 17 remains at least partially also upon pressurization such that the U-cup 3 complete remains in the groove 4 upon pressurization and is not extruded into the sealing gap 15. This considerably reduces wear of the U-cup 3. An inner surface 24 of the U-cup shows liquid dragging bore reliefs formed as recesses 25 in the inner surface 24 of the U-cup 3 for transferring hydraulic liquid, disposed on a surface of the translatory movable machine part 1, from a low-pressure side N of the U-cup to a high-pressure side H of the U-cup 3 upon translatory movement of the movable machine part 1.

Abstract: A wiping element made of a rubber-elastic or ductile-elastic material for the protection of components mobile against one another, wherein at least one wiping lip (2) is provided on a wiping ring (1). The wiping element has a protective lip (4), which is or can be fixed in a detachable fashion to the wiping ring (1). In a wiper arrangement (10), the wiping ring (1) is arranged position-stable on a first component and lies with the wiping lip (2) and the protective lip (4) adjacent to a second component. With the use of such a wiper arrangement (10) for the painting of components mobile against one another, at least one component is painted in the fixed state of the protective lip (4) and the protective lip (4) is then detached from the wiping ring (1).

Abstract: In a sealing system (1) between two mutually moving components (2, 3) for sealing a high pressure side (H) with respect to a low pressure side (N), a sealing configuration (9) is provided in a first annular groove (4) at the high pressure side and with one or more pressure relief elements (10a, 10b) being disposed in second annular grooves (14a, 14b) each pressure relief element (10a, 10b) having a second sealing ring (15a, 15b) with a flat pressure gradient. The hydrodynamic leak rate for each pressure relief element (10a, 10b) is chosen in such a fashion that a certain hydraulic pressure obtains in each intermediate region (Za, Zb).

Abstract: A seal is disclosed, for sealing a seal surface (5) between two machine parts (6, 7) which move relative to each other, wherein a seal body of the seal (1) comprises a retainer piece (10), arranged towards the groove base in a groove (8) in one of the machine parts (7), a sealing part (11), arranged in the groove (8) facing the sealing surface and a resilient connector part (12) between the sealing part (11) and the retaining part (10). The seal (1) has a recess (21) between the retainer part (10) and the connector part (12) and a further recess (20) between the connector part (12) and the sealing part (11). The seal (1) has spacer elements (25), said spacer elements (25) extending into at least one of the recesses (20, 21), preferably at least into the recesses (20) between the sealing part (11) and the connector part (12).

Abstract: A seal is disclosed, for sealing a seal surface (5) between two machine parts (6, 7) which move relative to each other, wherein a seal body of the seal (1) comprises a retainer piece (10), arranged towards the groove base in a groove (8) in one of the machine parts (7), a sealing part (11), arranged in the groove (8) facing the sealing surface and a resilient connector part (12) between the sealing part (11) and the retaining part (10). The seal (1) has a recess (21) between the retainer part (10) and the connector part (12) and a further recess (20) between the connector part (12) and the sealing part (11). The seal (1) has spacer elements (25), said spacer elements (25) extending into at least one of the recesses (20, 21), preferably at least into the recesses (20) between the sealing part (11) and the connector part (12).

Abstract: A high-pressure sealing arrangement is provided for sealing a gap (26) between two concentric machine parts (4, 5) which can be moved relative to each other, of which a first machine part (4) comprises a groove (3) and a second machine part (5) comprises an outer peripheral surface (7) opposite the groove (3). A sealing ring (1) of an extrusion-resistant material and a tensioning ring (2) of an elastomeric material are provided in the groove (3). A shaped section of the sealing ring (1) on the low-pressure side can be deflected towards the outer peripheral surface (7) under fluid pressure load. When the pressure decreases, the pressure-dependent deflection of the sealing ring (1) automatically returns towards the initial, unpressurized state of the sealing ring (1).