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PBI
PBI is a registered trademark of Celanese Corpo-
ration, and is an acronym for the term “polybenzimi-
dazole”, a high performance organic fber. PBI fbers
maintain dimensional stability at high temperatures and
are compatible in a wide range of chemicals and sol-
vents. Garlock incorporates wire-reinforced PBI yarns
in valve stem packings as well as adding spun fla-
ment yarns to the corners of pump packings for added
strength and abrasion resistance.
PTFE Packings
Garlock starts with the advantage of PTFE—excel-
lent chemical resistance, a wide temperature range,
fexibility with toughness—and combines them with the
superior LATTICE BRAID® construction to form adapt-
able, effective packings. High in quality and consistently
uniform, they are used extensively in the food process-
ing, chemical, agricultural and petroleum processing
industries.
SYNTHEPAK® Products
SYNTHEPAK® packings are a family of remarkable
spun synthetic fber packings created and developed
by Garlock for low-cost general industrial service. Since
they undergo the same braiding and treatment process
as asbestos packings, SYNTHEPAK® packings make
an excellent replacement for asbestos. This extremely
adaptable fber has proved superior to many types of
conventional packings.
XPG
The expanded PTFE/Graphite (XPG) yarn system
is a unique blend of expanded PTFE flament with a
blend of micronized graphite powder. The yarn utilizes
a high temperature silicone oil lubricant. It can be used
through an extremely wide range of applications in-
cluding acids, alkalies, aromatic and aliphatic solvents,
alcohols, esters, petroleum and synthetic oils, steam,
water and aqueous solutions, and air and dry industrial
gases.
XPG features good thermal conductivity, speed
capability, chemical resistance, low coeffcient of fric-
tion and low coeffcient of thermal expansion, making it
excellent for use in pumps, mixers and agitators.
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 respon-
sibility for errors. Specifcations subject to change without notice. This edition cancels
all previous issues. Subject to change without notice.
GARLOCK is a registered trademark for packings, seals, gaskets, and other products
of Garlock.