| 摘要 |
<p>The unit has an installation side (15) attached with an underground, where the unit is made of plastic. A hollow space (17) e.g. channel (18), surrounds a passage hole. The hollow space is formed with an inlet and an outlet (14) and connected with the passage hole. A sealant is provided at the installation side. The outlet is formed as a slot. The connection of the hollow space to the passage hole is diametrically arranged to a charging hole (13), so that a filling substance and/or a sealing compound flows around the passage hole reciprocally.</p> |
