| 摘要 |
Wear indicators (80) are formed in the seal strips (52, 54) of a suction box (44) of a suction roll assembly (15) of a papermill. The wear indicators include a space such as a bore (74) formed in the seal strip, extending through the arcuate seal surface (68, 70), and extending inwardly of the seal strip. The bores are filled with colored fill material, with red fill material (81) located deep in the bore, yellow fill material (82) placed on top of the red fill material, and green fill material (83) placed on top of the yellow fill material and reaching the seal surface of the seal strip. As the seal strip wears during the operation of the papermill, the colored fill material will be visible upon inspection of the seal strips, informing the inspector of how much farther the seal strips can be urged outwardly into engagement with the suction roll (22) in response to inflation of the inflatable biasing tubes (56, 58 and 60).
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