Sliding seal system has inner and outer cover plates enclosing chamber with labyrinthine opening, seal between plates with recess containing helical spring and second seal above first enclosing recess

摘要

The sliding seal system comprises inner (1) and outer (2) cover plates which enclose a chamber (3) with a labyrinthine opening (5). A seal (6) is mounted between the plates with a recess (14) which opens into the chamber and contains a helical spring (7). A second seal (101) above the first encloses the recess.