| 摘要 |
<p>The invention relates to a sealing device on a product chamber (10) for chemical and pharmaceutical products, comprising a shaft bore housing (1), a shaft bearing (82), a shaft protection bush (3), and a lip sealing assembly (4), which is characterized in that a wiper formation (6, 7) is provided on the shaft bore housing adjacent to the product chamber which has a wiper ring (7) and a ring seal (6), wherein the sealing end (61) on the shaft protection bush seals the product chamber, and that there is a throttle ring (5) for supporting the ring seal and for forming a throttle gap (50) along the shaft protection bush.</p> |
