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| Extreme Gaskets |
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For EXTREME Applications |
Ameraflex Extreme Flexible Graphite
Gaskets
Finally...A Metal Gasket
Alternative |
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High Pressure • High
Temperature
Perfect For All Types of Heat Exchangers
While you wait
for your "special" spiralwound or metal gasket
we could have already cut
this gasket for you! |
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Characteristics
A multi-layer laminate for extreme applications from Cryogenic
to High-Temperature Applications (to 930°F 500°C).
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Temperature: -328°F (-200°C) To 1000°F
(538°C)
pH: 0-14
Pressure: 7,500 p.s.i. |
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Applications
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For very high gasket stresses of up to 80,000 psi |
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With high internal pressures of up to 2,000 psi |
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For gaskets requiring increased demands on operational
reliability and impermeability |
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Hazardous service media such as flammable gases and
media |
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For gaskets in tongue and groove flanges meeting DIN and ANSI
standards as on-piece graphite sheet gaskets up to 60" OD, and as two-layer
structures in segments for gaskets exceeding 60" OD. |
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Can be used from cryogenic temperatures up to more than
500°C depending on installation and operating conditions. |
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In steam up to approx. 450°C (For applications in air above
400°C, users should contact our technical personnel.) |
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Properties
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Very high compressive strength |
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High blow-out resistance |
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High rigidity |
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Excellent handling properties |
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No buckling |
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Good scratch resistance due to surface impregnation |
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"Anti-stick" properties |
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Long-term stability of compressibility and recovery over a wide
temperature range |
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No measurable cold or warm flow characteristics up to maximum
permissible compressive stress |
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High gasket stress capabilities |
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Good resistance against chemical attack |
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No aging or embrittlement |
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Excellent resistance to thermal shock |
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| SPECIFICATIONS |
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| PROPERTY |
UNIT |
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| Nominal Thickness |
inch ( ± 10%
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0.030" |
0.060" |
0.120" |
| Density (graphite) |
lb/ft3 |
70 |
70 |
70 |
| Ash content, max. |
% |
0.15 |
0.15 |
0.15 |
| Total Chlorine, max. |
ppm |
20 |
20 |
20 |
| 316 SS Insert Thickness |
inch |
0.002" |
0.002" |
0.002" |
| Number of Inserts |
— |
1 |
2 |
5 |
| Compressibility |
% |
30-40 |
30-40 |
30-40 |
| Recovery |
% |
15-20 |
15-20 |
15-20 |
| Creep Relaxation |
% |
<4 |
<4 |
<4 |
| Stability Under Stress (DIN 52913) |
N/mm |
48 |
48 |
48 |
| ASME Code Factor "m" (for "standard"
tightness) |
— |
2.5 |
2.5 |
2.5 |
| ASME Code Factor "y" (for "standard"
tightness) |
psi |
3000 |
3000 |
3000 |
| Gas Permeability According DIN 3535 (ASTM
PS56) |
ml / min |
<0.1 |
<0.4 |
<0.8 |
| PVRC Design Constants*: |
psi
psi
psi |
787
0.4
0.00287 |
787
0.4
0.00287 |
787
0.4
0.00287 |
| Tp min @ 4,500 psi gasket stress |
psi |
370 |
370 |
370 |
| p min @ 15,000 psi gasket stress |
psi |
2218 |
2218 |
2218 |
| * Taken from
BFG-6.1 (Actual test data and interpretations available in TTRL test reports).
ROTT test results are subject to interpretation and can lead to differing
design constants Gb, a, Gs. |
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Ameraflex's brand of flexible graphite
material. It has a laminate with a flat 316 stainless steel insert, (0.002")
made from Standard Industrial Grade B sheet with adhesive bond.
Ameraflex's brand of flexible
graphite material. It has a 316 stainless steel tang inserted laminate.
Standard Industrial Grade B sheets mechanically bonded to a tanged sheet insert
(0.004"), no adhesive.
The information,
recommendations and opinions set forth herein are offered solely for your
consideration, inquiry and verification, and are not, in part or total, to be
construed as constituting a warranty or representation for which we assume
legal responsibility. AMERAFLEX makes no warranties with respect to such data
and assumes no responsibility for performance characteristics resulting from
conditions which differ from those used in laboratory tests.
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Ameraflex
Sealing Products Co., Inc.
317 Georgia
Avenue • Deer Park,
Texas 77536
1-800-522-7325 • (281)476-8500 • FAX(281)476-8520
e-mail
Copyright © by Ameraflex
Sealing Products Co., Inc. All Rights Reserved
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