Abstract: A support ring (12) and a piston ring (11) that are arranged in a peripheral groove (20) provided on a piston body (15), the axial width of the peripheral groove (20) being greater than the total axial width of the support ring (12) and of the piston ring (11), and the support ring (12) is arranged radially inwardly at a distance from the piston body (15), and the support ring (12) is relief-milled from the piston body (15) as an unbroken ring.

Abstract: To reduce leakage of pressure medium in a seal arrangement (1) comprising two sealing elements (8) that are pressed by a sealing medium against the piston rod (3) and against a wall (11) of a recess (10), it is provided that the radially interiorly disposed circumferential surface (24) constitutes at least one of the sealing elements (8) from a sealing surface (12) and a tributary area (23), a second end face (21) that faces away from the axial end (11) of the recess (10) connecting to the sealing surface (12), and a rigid cover ring (9) being provided that is positioned at least in part radially against the radially exterior circumferential surface (25) of the sealing element (8) and at least in part axially against the second end face (21) of the sealing element (8).

Abstract: A support ring (12) and a piston ring (11) that are arranged in a peripheral groove (20) provided on a piston body (15), the axial width of the peripheral groove (20) being greater than the total axial width of the support ring (12) and of the piston ring (11), and the support ring (12) is arranged radially inwardly at a distance from the piston body (15), and the support ring (12) is relief-milled from the piston body (15) as an unbroken ring.

Abstract: A multipart packing ring for sealing a piston rod of a compressor includes ring segments and sealing segments which are alternatingly arranged to form a ring. The ring segments include a curved main part and an axial shoulder and the sealing segments include a curved main part and an axial projection. The circumferential ends of the main part of the ring segments and the circumferential ends of the axial projection of the sealing elements face one another and define first wear gaps there-between.

Abstract: A segmented packing ring 20 includes a number of first sealing segments 21, a number of second sealing segments 22, and a number of support segments 23, the support segments 23 and the second sealing segments 22 being arranged in an alternating successively abutting manner in the circumferential direction, and the first sealing segments 21 being arranged in a manner axially abutting the second sealing segments 22 and the support segments 23, and including a nose 24 extending axially on the second sealing segments 22, which is arranged in the circumferential direction between two adjacent first sealing segments 21.

Abstract: Conventional combinations of radially and tangentially cut packing rings require, in particular as wear progresses, a degree of resilient deformation of the resilient packing ring, in order to be able to achieve a satisfactory sealing effect. However, the level of wear achievable is limited thereby. On the other hand, sealing rings which offer a high level of wear and a long service life due to the cut arrangement wear in an uncontrolled manner, which is associated with a risk of damage to or destruction of the sealing rings, resulting in the need for regular maintenance and replacement of the sealing rings.

Abstract: In pressure packings for sealing a piston rod of a compressor, a combination of a radially cut and a tangentially cut packing ring is generally used. These two interacting packing rings must in this case be prevented from rotating relative to one another in order to ensure that the wear gaps are covered by the other ring in each case. The rotation prevention means is generally a pin which is placed in both rings. However, owing to the resulting differing wear to the radially cut and the tangentially cut packing ring, the rotation prevention pins are subjected to shear stress which can cause the pins to break. In order to avoid that, pressure packings are proposed which have individual packing rings and have to be specially cut for this purpose. The present invention describes a packing ring of this type that is distinguished by especially low wear to the ring segments and a long service life associated therewith.