Page 66 - GarlockFluidSealing2010

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High Temp Compressed Graphite or
Carbon Fiber Gasketing
G-9900
4
9800
4
9850
4
Color
Mahogany
Black
Black
Composition
Graphite with nitrile Carbon with SBR
Carbon with nitrile
Temperature
1
Maximum
+1,000°F (+540°C)
+900°F (+480°C)
+900°F (+480°C)
Minimum
-100°F (-75°C)
-100°F (-75°C)
-100°F (-75°C)
Continuous max.
+650°F (+340°C)
+650°F (+340°C)
+650°F (+340°C)
Pressure
1
psig
2,000
2,000
2,000
(bar)
(138)
(138)
(138)
P x T, max
.
1
(psig x °F)
1/32", 1/16"
700,000
700,000
700,000
(bar x °C)
(0.8 mm, 1.6 mm)
(25,000)
(25,000)
(25,000)
1/8"
350,000
350,000
350,000
(3.2 mm)
(12,000)
(12,000)
(12,000)
Sealability
(ASTM F37B)
2
ASTM Fuel A
ml/hr
0.1
0.1
0.1
Nitrogen
ml/hr
0.1
0.1
0.1
Creep Relaxation
(ASTM F38) %
9
15
15
Compressibility Range
(ASTM F36)
%
7-17
7-17
7-17
Recovery
(ASTM F36)
%
> 65
> 55
> 56
Fluid Resistance
(ASTM F146 @ 5 hours)
ASTM #1 Oil
at +300°F (+150°C)
Thickness increase
%
0-5
0-10
0-5
Weight increase
%
< 10
< 20
< 10
ASTM IRM #903 Oil
at +300°F (+150°C)
Thickness increase
%
0-10
15-40
0-10
Tensile loss
%
< 35
< 65
< 35
ASTM Fuel A at
+70-85°F (+20-30°C)
Thickness increase
%
0-5
0-10
0-5
Weight increase
%
< 7
< 20
< 7
ASTM Fuel B
+70-85°F (+20-30°C)
Thickness increase
%
0-10
5-20
0-10
Weight increase
%
< 15
< 20
< 15
Tensile Strength
across grain psi
1,800
1,500
1,800
(ASTM F152)
(N/mm
2
)
(12)
(10)
(12)
Density
lbs/ft
3
110
105
105
(g/cm
3
)
(1.76)
(1.68)
(1.68)
Gas Permeability
(DIN 3535 Part 4)
3
cc/min.
0.015
0.015
0.015
Notes:
1
Based on ANSI RF fanges at our preferred torque. When approach-
ing maximum pressure, continuous operating temperature, minimum
temperature or 50% of maximum PxT, consult Garlock Engineering.
2
ASTM F37B Sealability
ASTM Fuel A (isooctane):
Gasket load = 500 psi (3.5 N/mm
2
), Int. pressure = 9.8 psig (0.7 bar)
Nitrogen:
Gasket load = 3,000 psi (20.7 N/mm
2
), Int. pressure = 30 psig (2 bar)
3
DIN 3535 Part 4 Gas Permeability, cc/min. (1/16" thick)
This is a general guide and should not be the sole means of selecting
or rejecting this material. ASTM test results in accordance with ASTM
F-104; properties based on 1/32" (0.8mm) sheet thickness.
Nitrogen:
Gasket load = 4,640 psi (32 N/mm
2
), Int. pressure = 580 psig (40 bar)
4
Saturated steam service guidelines:
• For optimal performance, use thinner gaskets when possible.
• Minimum recommended assembly stress = 4,800 psi.
• Preferred assembly stress = 6,000 psi to 10,000 psi.
• Retorque the bolts/studs prior to pressurizing the assembly.
• If the service is superheated steam, contact Applications Engineering.
* Values do not constitute specifcation limits
All styles are furnished with an anti-stick parting agent as standard.
Typical Physical Properties*
C-6