| 摘要 |
The invention relates to a radial shaft seal for sealing a shaft (2), which is guided through a housing wall opening (3). The seal comprises at least one first membrane-like, annular sealing element (15) with a sealing lip (22) which can be positioned against the shaft (2) in a sealing manner; a metallic, annular supporting element (16), onto which the sealing element (15) is pulled; and a centring surface (19) formed at the outer circumference of the edge area (18). In order to increase the lifespan of the seal, said seal can be surrounded by an adapter part (6) made from undulating curved sheet metal, which can be inserted flush into the housing wall opening (3). The adapter part (6) has a central, cylindrical opening (8) which is provided with a shoulder (11) at the rear end thereof in the compression direction. The centring surface (19) of the supporting body (16) has an allowance for the cylindrical opening (8) of the adapter part (6), and is pushed into said opening in a press-fitting manner. A second membrane-like sealing element (17), which can be firmly pressed between the shoulder (11) and the supporting body (16), is arranged between the supporting body (16) and the shoulder (11) provided in the opening (8) of the adapter part (6). |
| 主权项 |
1. Radial shaft seal for sealing a shaft passing through a housing wall opening, comprising:
at least one membrane-like, annular first sealing element with a sealing lip that can be positioned against the shaft in sealing fashion, a metallic, annular supporting element on which the sealing element is mounted, an edge area provided on the supporting element, which runs around the outer circumference and is not covered by the sealing element, and a centering surface provided on the outer circumference of the edge area, an adapter part surrounding the seal, the adapter part made of undulating sheet metal that can be inserted tightly into the housing wall opening, in that the adapter part displays a central, cylindrical opening provided with a shoulder on its rear end, seen in the pressure direction, in that the centering surface of the supporting element has an interference relative to the cylindrical opening of the adapter part and can be inserted into it in an interference fit, in that a second, membrane-like sealing element is located between the supporting element and the shoulder provided in the opening of the adapter part, and in that the second sealing element can be firmly pressed in between the shoulder and the supporting element. |
