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Operation
Packing (106)
Lantern ring (105)
Shaft sleeve (126)
Stuffing box cover (184)
Gland (107)
Shaft (122)
Figure 9: Typical stuffing box
Packing procedure
1. Stuffing box and shaft sleeve must be clean and free of grit.
2. Form packing over shaft or mandrel of same diameter. Carefully cut to packing length.
3. Pre-form each ring by coiling 1-½ turns.
4. To install packing rings, do not pull straight. Expand the coil as a coil spring.
5. Expand first coil as shown and insert into stuffing box. Tamp packing to stuffing box
6. Install second and third coils as required by assembly drawing, staggering the cut 90º-120º.
7. Insert seal cage (lantern ring) into stuffing box, carefully noting its proper position on
8. After packing and seal cage are properly installed, insert gland into stuffing box. Tighten
12
Discard rings cut too short.
Figure 10: Stuffing box packing - Correct
Figure 11: Stuffing box packing - Incorrect
shoulder firmly with the gland. Note where the cut is positioned.
assembly drawing. Failure to properly locate seal cage will result in insufficient packing
lubrication. Packing and shaft sleeve damage will occur.
gland nuts finger-tight only. Shaft should turn freely.
Model JC Installation, Operation and Maintenance Instructions
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