Packing (106)
Lantern ring (105)
Shaft sleeve (126)
Stuffing box cover (184)
Gland (107)
Shaft (122)
Figure 10: Typical stuffing box
4.2 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. Discard rings
cut too short.
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.
Figure 11: Stuffing box packing - Correct
Figure 12: Stuffing box packing - Incorrect
5.
Expand first coil as shown and insert into stuffing box. Tamp packing to stuffing box shoulder firmly
with the gland. Note where the cut is positioned.
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 assembly
drawing. Failure to properly locate seal cage will result in insufficient packing lubrication. Packing
and shaft sleeve damage will occur.
4.2 Packing procedure
Model JC Installation, Operation and Maintenance Instructions
21
