Abstract: Embodiments relate to a seal for sealing a valve shaft in an internal combustion engine. The seal includes a sealing lip of an elastomer which is configured to be in contact with a shell surface of the valve shaft perpendicular to a radial direction. The seal further includes a supporting structure firmly connected to the sealing lip and made of a material different from the elastomer of the sealing lip which is configured to create a form-fit in the axial direction directly between the supporting structure and a guide element of the valve shaft by an at least partial plastic deformation in the radial direction.

Abstract: A sealing lip seals a first space from a second space with respect to a liquid medium present in the first space. The sealing lip has abutment surface configured to abut on a sealing surface of a component that is movable relative to the sealing lip along a direction of movement. A groove is defined in the abutment surface and pumps any liquid medium present in the groove towards the first space along the direction of movement. The groove extends completely within the abutment surface and is enclosed by the abutment surface, such that it does not intersect either lateral edge of the sealing lip.

Abstract: Embodiments relate to a seal (200) for sealing a valve shaft in an internal combustion engine. The seal (200) comprises a sealing lip (205) of an elastomer (210) which is configured to be in contact with a shell surface of the valve shaft perpendicular to a radial direction. The seal (200) further comprises a supporting structure (215) firmly connected to the sealing lip (205) and made of a material different from the elastomer (210) of the sealing lip (205) which is configured to create a form-fit in the axial direction directly between the supporting structure (215) and a guide element (220) of the valve shaft by an at least partial plastic deformation in the radial direction.

Abstract: A sealing assembly includes a seal support having a support ring made from an elastomeric material, at least one seal element having a ring made from a polymer material, and an abutment ring against which a radial portion of the seal element axially abuts. The seal element is connected in a materially-bonded manner to the support ring along a first radially outer portion of the seal element, and the seal element axially abuts on the abutment ring along a second radially inner portion of the seal element. The seal element and the abutment ring are free of any connection along the second radially inner portion of the seal element.

Abstract: A seal includes a sealing lip having a sealing region with a pumping structure that can abut on a first component. The pumping structure causes a liquid medium to move in a direction from a first axial side of the seal towards or to a second axial side of the seal when the first component rotates relative to a second component. The pumping structure includes at least one pumping groove that extends along a direction of extension and at least one retaining structure disposed in the at least one pumping groove. The at least one retaining structure reduces a cross-section of the at least one pumping groove, in at least one direction perpendicular to the direction of extension, to a value of between 50% and 90% of an extension of the cross-section of the pumping groove outside the at least one retaining structure along the at least one direction.

Abstract: A sealing assembly includes a seal support having a support ring made from an elastomeric material, at least one seal element having a ring made from a polymer material, and an abutment ring against which a radial portion of the seal element axially abuts. The seal element is connected in a materially-bonded manner to the support ring along a first radially outer portion of the seal element, and the seal element axially abuts on the abutment ring along a second radially inner portion of the seal element. The seal element and the abutment ring are free of any connection along the second radially inner portion of the seal element.

Abstract: A seal includes a sealing lip having a sealing region with a pumping structure that can abut on a first component. The pumping structure causes a liquid medium to move in a direction from a first axial side of the seal towards or to a second axial side of the seal when the first component rotates relative to a second component. The pumping structure includes at least one pumping groove that extends along a direction of extension and at least one retaining structure disposed in the at least one pumping groove. The at least one retaining structure reduces a cross-section of the at least one pumping groove, in at least one direction perpendicular to the direction of extension, to a value of between 50% and 90% of an extension of the cross-section of the pumping groove outside the at least one retaining structure along the at least one direction.

Abstract: A sealing lip seals a first space from a second space with respect to a liquid medium present in the first space. The sealing lip has abutment surface configured to abut on a sealing surface of a component that is movable relative to the sealing lip along a direction of movement. A groove is defined in the abutment surface and pumps any liquid medium present in the groove towards the first space along the direction of movement. The groove extends completely within the abutment surface and is enclosed by the abutment surface, such that it does not intersect either lateral edge of the sealing lip.

Abstract: A radial shaft seal ring includes a reinforcement ring and an elastomeric part connected to the reinforcement ring. The elastomeric part carries a sealing lip, which is formed by an annular component connected to the elastomeric part. The annular component has a sealing edge made from PTFE which is formed to sealingly abut on a shaft to be sealed by the radial shaft seal ring. The sealing edge can be formed as a sharp-edged sealing edge that abuts, in linear contact, on the to-be-sealed shaft.

Abstract: A radial shaft seal ring includes a reinforcing ring and an elastomer part connected to the reinforcing ring. The elastomer part includes a dynamic sealing lip having a radial sealing lip section and an axial sealing lip section. The axial sealing lip section includes a sealing edge for sealing abutment on a shaft. The sealing edge is disposed on an inner peripheral wall of the axial sealing lip section and the inner peripheral wall faces towards the shaft. The axial sealing lip section further includes a reinforcing structure.