US Patent 7082730 Sealing system

A sealing system (11) for sealing off a passage of a pipeline (2) in a wall (1) including a sealing strip (3) for sealing off the passage and three support members (4.1, 4.2, 4.3) for supporting the sealing strip (3). Each support member (4.1, 4.2, 4.3) has a fastening section (41.1) for attaching the support member (4.1, 4.2, 4.3) to the wall (1). The support elements (4.1, 4.2, 4.3) each have three sleeve sections (42, 43.1, 43.2). Engagement mandrels or points for engaging in the sealing strip (3) are provided on two of the sleeve sections (42.1, 43.2).