| 摘要 |
Seal unit, for a partition (9) covered with a sound insulating layer (10) that has an aperture for a shaft (6) to pass through, is a one piece assembly (11) comprising a sleeve (12) surrounding the shaft, attached to a rigid support (13) on the partition (y) two supple and parallel walls (14a, 14b) extending perpendicular to the lengthwise axis of the sleeve and forming an air cavity (15) between them. The rigid support on the partition comprises a crown (18) and a tubular component (19) with its inner edges attached to the periphery of the two supple walls and equipped with a centering element. |
