Page 174 - GarlockFluidSealing2010

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Figure 4:
Non-lubricated box
Spring-loaded self-adjusting
CHEVRON® set
Figure 3:
Lubricated box
Adjustable primary CHEVRON® set
Non-adjustable secondary CHEVRON® set
Figure 2:
Lubricated box
Adjustable primary and
secondary CHEVRON® sets
Seals for Reciprocating
Plunger Pump Applications
Garlock has long been a leader in the development
of seals and packings for reciprocating equipment. The
CHEVRON® trade name for vee packing was registered
over 70 years ago; and although it is very popular for
use in such applications as hydraulic cylinders and hy-
draulic presses, it also is capable of providing excellent
performance for the demanding service conditions found
in plunger pumps.
As noted on the next page, our Style 8380
LOCK-PACK™ can be used in the most common recipro-
cating pump applications where a nonadjustable packing
is desired.
However, when unusual operating conditions, size
or the need for an adjustable packing set rules out the
use of LOCK-PACK™, it is important to be able to offer
alternative packing recommendations. With hundreds of
tooled sizes available in numerous materials, Garlock
CHEVRON® provides the options necessary to meet the
changing needs of Simplex and Multiplex pumps.
Over the years Garlock has developed styles specif-
cally for plunger pump applications. Although other ma-
terials are available, one of the following packing styles
will most likely provide satisfactory service:
8024:SBR rubber/cotton fabric, rockhard cure
8064:SBR rubber/cotton fabric, standard cure
8140:SBR rubber/polyester-cotton fabric,
rockhard cure
8150:NBR/PTFE/polyester-cotton fabric,
standard cure
In addition to selecting the proper material for an
application, the packing arrangement and design of the
other packing set components are equally important.
Bronze is the material of choice for male and female
adapters or lantern rings to provide plunger alignment
through the sealing CHEVRON®, as well as prevent its
extrusion. Figures 1 through 4 illustrate some common
packing assemblies.
Since stuffng box spaces vary with pump models, it
may be necessary to have Garlock design the packing
set. The minimum information necessary to do so should
include the operating conditions and details of the pack-
ing area, which may be best covered by a drawing.
Garlock has the products, experience and quality to
satisfy your plunger pump packing needs. WARNING:
Properties/applications shown throughout this brochure are typical. Your specifc applica-
tion should not be undertaken without independent study and evaluation for suitability.
For specifc application recommendations consult Garlock. Failure to select the proper
sealing products could result in property damage and/or serious personal injury.
Performance data published in this brochure has been developed from feld testing,
customer feld reports and/or in-house testing. While the utmost care has been used in
compiling this brochure, we assume no responsibility for errors.
Specifcations subject to change without notice. This edition cancels all previous issues.
Subject to change without notice.
Figure 1:
Non-lubricated box
Adjustable CHEVRON® set