When the stuffing-box has been filled, place the gland in position and screw up tight.
The stuffing-box should be just as loose as it can be and not allow leakage of steam.
If now the pump starts off well, you have found the difficulty; but at the first opportunity you ought to repack the stuffing-box.
Fitting into the bottom of the stuffing-box is a brass bush H.
Never pack the stuffing-box too tight, or you may flute the rod and spoil it.
Fig. 51 shows a gland and stuffing-box for a horizontal rod.
This spindle moves through a stuffing-box k, and is worked by gearing, which will be described hereafter.
Leakage at the neck of the plug is prevented by a gland and stuffing-box.
They should be exactly the right length to go around inside the stuffing-box.
A more elaborate form of gland and stuffing-box is shown in fig. 53.