| 摘要 |
The present invention involves a flexible annular member passing through a wall opening. The flexible annular member is positioned about a conduit passing through the wall opening to enable the conduit to pass through the wall at an angle up to and even greater than 30 DEG . Another embodiment of the present invention comprises a flange type riser and base connection involving the location of the entire sealing assembly within a chamber base/riser section.
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