The seal assembly for articulation, NODE swivel and mechanisms articulated joints and O-NODE

摘要

1. A seal assembly (51, 52, 451) for the articulation (24) comprising a first member (20) rotating about the rotational axis (RA) relative to its second element (22), wherein the first member (20) and a second member (22) each comprises a contact surface 130, 330, 530) of the carrier ring, wherein a seal assembly (51, 52, 451) comprises: first and second sealing rings (111, 112, 511, 512), each of which comprises axially oriented mounting surface (134, 534) and a radially oriented sealing surface (136, 536); first and second sealing rings (111, 112, 511, 512) abut against each other, so that the sealing surfaces (136, 536) of the first and second sealing rings (111, 112, 511, 512) are in contact with each other ; and a first and second annular supporting rings (121, 122, 521, 522), the first carrier ring (121, 521) is generally in the unloaded state has a circular cross-sectional shape: and the first bearing ring (121, 521) is in contact with the contact surface (130 , 330, 530) of the first element (20) and a mounting surface (134, 534) of the first sealing ring (111, 511); and the second carrier ring (122, 522) is in contact with the contact surface (130, 330, 530) of the second element (22) and a mounting surface (134, 534) of the second sealing ring (112, 512); wherein at least either the contact surface (130, 330, 530) with a bearing ring of the first element (20) or the mounting surface (134, 534) of the first sealing ring (111, 511) comprise projecting from said radial surface of the annular a projection (188, 388, 588) limiting axial movement of the first carrier ring (121, 521) with respect to the sealing surface