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Packing Materials
Aramid
These fbers are aromatic polyamides that were
given the generic name “aramid.” With excellent re-
sistance to high temperatures and exceptional tensile
strength, aramid flaments are considered to be stron-
ger, pound for pound, than steel. Garlock utilizes a
variety of these fbers including spun and flament ver-
sions. Filament yarns are added to the corners of pump
packings for greater resistance to abrasive media.
Carbon/Graphite Filament Packings
Garlock carbon flament products are made from
carbon yarns having a 95% minimum carbon assay.
Premium products (Styles 98, 98-VC and 5000) use
pitch-based yarns, while CARBAE™ Styles 105 and
108 are made from P.A.N.* base yarns. Low friction
coeffcients are standard for less shaft wear and lower
maintenance and replacement costs. Garlock carbon
fbers also offer more value per pound than other pack-
ings.
Garlock graphite flament products are braided
from high-purity graphite flaments with a minimum
carbon assay of 99%. They have excellent chemical
resistance, are thermally conductive and can be used
in extreme temperature and pressure conditions.
Fiberglass
Glass fbers exhibit superior thermal properties,
dimensional stability and tensile strength. Glass fbers
will not burn, and they dissipate heat more rapidly than
organic fbers. The glass fbers most commonly used
in compression packings are “E” grade (electrical) and
“S” grade (strength). Common solvents, oils, petroleum
distillates, bleaches and most organic chemicals do not
affect fberglass.
Flax
Garlock carefully selects quality long-fber roving
yarns, braids them, and then thoroughly impregnates
them with the required lubricating agents. They are
designed for optimum service in waste and dilute aque-
ous solutions up to +250°F (+121°C) at low to medium
pressures. Industries such as mining, milling, steel,
waste/water treatment, marine, and pulp and paper
regularly specify these packings for their operations.
GRAPH-LOCK ® Products
Made of extremely pure graphite, Garlock GRAPH-
LOCK® packing products offer unmatched service in
industrial environments where searing temperatures
and crushing pressures cause constant failure of con-
ventional packings.
Flexible Graphite Tape Products
GRAPH-LOCK® is self-lubricating, dimensionally
stable, impervious to gases and fuids, and corrosion-
resistant. GRAPH-LOCK® products offer excellent
sealing capabilities under extreme conditions for longer
equipment life and less maintenance. It is available in
tape and die-formed rings from Garlock Compression
Packing and in sheet form from Garlock Sheet Prod-
ucts.
Garlock Compression Packing offers two purity
levels of our GRAPH-LOCK® products—commercial
grade of 95% and nuclear grade of 99.5%. The nuclear
grade material meets General Electric Spec. D50YP12,
Rev. 2 dated Oct. 1992; MIL-P-24503B (SH); and can
be certifed for oxygen service.
Flexible Graphite Braided Products
Garlock offers a variety of high-purity braided fex-
ible GRAPH-LOCK ® products as well. We offer a plain
braided graphite version (1300), INCONEL** wire-re-
inforced versions (1303-FEP, 1398, 1399), an aramid-
reinforced version (1304), and a graphite flament-rein-
forced version (1333-G).
MILL-RIGHT® Products
The experience gained over 100 years as a
manufacturer has enabled Garlock to develop “Tough
Technology” for the MILL-RIGHT® family of packings.
Fiber-infused technology starts with yarns produced at
our own facility. With the addition of an exclusive block-
ing and lubricating system, Garlock non-contaminating
packings can resist abrasion without being abrasive
to equipment and perform successfully throughout a
broad range of industries and applications.
* P.A.N.: poly-acrylo-nitrile
** INCONEL is a registered trademark of Inco Alloys International, Inc.