| 摘要 |
The present invention relates to a face seal for sealing a radial area (6) between a rotatable shaft (2) and a through hole inside a house (1). The radial space (6) extends from an area (A) located outside of the house (1) to a first internal area (B1) in the house (1), where a higher pressure prevails than in the outside area (A). The face seal (5) comprises a first sealing element (9) and a second sealing element (13), which are adapted to abut against each other, so that said area (6) is divided into a first part (6a), which is in contact with the external area (A), and a second part (6b) which is in contact with the first internal area (B). The face seal (5) comprises a pressure relieving device (15, 16, 17, 18), adapted to be arranged in the second part (6b) of the radial area and to create a zone (6b1) therein in connection with said sealing element (9, 13), where a lower pressure prevails than in the first internal area (B1). |
