| 摘要 |
A sealing ring (1) for sealing an annular gap between an inner tube (3) and an outer tube (4), which is axially slidable onto the inner tube, is adapted to be located in a circumferential groove (7) in the inner tube (3), prior to the outer tube (4) being slid on. The sealing ring (1) has a first sealing portion (8), which is adapted to abut against the bottom of the groove (7), a second sealing portion (10), which is adapted to abut against the outer tube (4), and two lateral sealing portions (13, 14), which are adapted to abut against either side wall of the groove (7). The lateral sealing portions (13, 14) consist of projecting, elastically flexible tongues, which extend obliquely axially-radially outward from the first sealing portion (8) on both sides of the second sealing portion (10). The axial distance between the free ends of the two tongues is larger than the width of the groove (7). The tongues are adapted to engage the side walls of the groove (7) adjacent to the mouth of the groove. A circumferential recess (17, 18) is formed between the second sealing portion (10) and each lateral sealing portion (13, 14) to allow the second sealing portion (10) and each lateral sealing portion (13, 14) to be moved towards each other in case of deformation of the sealing ring (1). |
