This document provides instructions for replacing gland packing in equipment. It discusses selecting the proper packing material for the application and environment. The steps outlined include removing the old packing, cleaning the stuffing box, inspecting parts for wear, cutting new packing rings to size, inserting the rings with the closed ends first, using a split disc to push the rings into place, installing a lantern ring if needed, and gradually tightening the gland nuts to control leakage. Proper packing replacement can save time and reduce equipment, operation, and power costs through continued effective sealing performance.

1. Gland Packing Replacement
VOLUME #7 12.July.2020
High performance packing can
bring competitive cost savings
when materials are correctly
applied to each specific sealing
environment. Note just a few:
 Time savings with ease of
installation
 Equipment savings with
continued performance in the
case of axial shaft movement
 Sealing equipment savings
with continued performance in
the case of gritty or viscous
media and of pressure
changes in fluid and/or flush
 Operation savings with
reduction in friction and thus
power consumption
Repacking
Various methods are utilized to control leakage at shafts,
rods, or valve stems and other functional parts of equipment
requiring containment of liquids or gases. The oldest and still
most common of these sealing devices is Gland packing,
Made from relatively soft, pliant materials, compression or
mechanical packings consist of a number of rings, which are
inserted into the annular space (stuffing box) between the
rotating or reciprocating member and the body
of the pump or valve. Packing seal all types of fluids including
water, steam, acids, caustics, solvents, gases, oil, gasoline,
and other chemicals over a broad range of temperature and
pressure conditions. Packing can
also be used to seal solids flow streams such as powders.

2. Steps to re pack the stuffing box:
 Stop the equipment, and make sure that
pressure is released. Then Remove gland.
 Take out old packing rings using packing
extractor for fast and safe procedure, and to
avoid damaging stuffing box, spindle, shaft or
shaft sleeve.
 Make sure that all packing rings has been
removed even those behind lantern ring if
existing.
 Clean stuffing box, and spindle, shaft or shaft
sleeve.
 Make sure to replace worn equipment parts.
 Check shaft bearing (if existing in the
equipment), and make sure to change if there
is any eccentricity.
 Make sure that the contact faces of the
packing to the equipment is 90.
 Select the suitable packing type and size.
Cut packing ring, either by using our packing
cutter, or using the following formula:
Cut packing length =p (OD + ID) / 2
 Insert closed ends first of the ring in the
stuffing box, after that push rest of the ring
gently inside.
 Use split disc to assure pushing rings to the
bottom of stuffing box.
 Make sure to insert lantern ring in its position
even if not used.
 Start controlling leakage, by tightening nuts
uniformly of a turn each time, till you reach
 the acceptable leakage
FOR FURTHER DETAILS, DO
NOT HESITATE TO CONTACT
US:
sales@alimex.org
www.alimexgroup.com
+20224177821 +24177894
+20 127 5177188
1 EL Marwa Buildings Ahmed
Taysir St. Heliopolis, Cairo
Egypt.