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7.5 Stuffing Box Packing
To ensure the proper functioning of the stuffing box
gland after extended Operation, avoid readjusting it. If
readjustment becomes necessary, the packing will
need to be added to or replaced. Refer to Figure. 6 & 7
and Table 4.
To replace the packing in the stuffing box, follow
these steps:
TYPE NBE3/4...
Nominal diameter of shaft bushing
in inches
Total length of packing rings per machine
in feet
Length of individual packing ring
in inches
Cross-section of packing rings
in inches
Number of inner
packing rings per
stuffing box
Number of outer
packing rings per
stuffing box
Table 4: Packing Box Information
NBE O & M Document No. NES/NBE/O&M
30. / 32.
40. / 42.
6.102
8.07
15.09
19.36
22.05
27.95
0.47 x 0.47
0.55 x
0.55
2
2
2
2
1. Remove the old packing materials and clean the
packing space.
2. Insert new packing rings, ensuring that the joint
gaps are offset by 90 degrees. Take care not to disrupt
the distribution of the seal water in the packing.
3. It is recommended to have NES Service perform the
packing replacement and adjustment.
50. / 52.
60. / 62.
9.646
10.63
23.29
25.26
33.46
37.00
0.63 x
0.63 x 0.63
0.63
2
2
2
2
Please exercise caution when working with sharp edges as
there is a risk of injury. It is essential to wear appropriate
personal protective equipment, such as protective gloves,
when performing tasks in this area.
67.
72.
11.417
12.008
27.23
28.54
39.37
40.94
0.63 x 0.63
0.71 x 0.71
2
2
2
2
CAUTION!
Page 28 of 43
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