| Benefits: |
- Heat & Pressure Resistant
- Carbon fiber gasketing excels in harshest conditions - intense heat, high pressure, saturated steam† and hot oils (Style 9850)
- Laboratory tested for fire safety
|
| Tighter Seal: |
- Maintains effective seal during pressure and temperature fluctuations
- Significantly reduces emissions to meet stringent Clean Air Act requirements
|
| Convenient: |
- Flexible material is easy to handle and cut
- Sheet sizes to 150" x 150" (3.8m x 3.8m) minimize waste and inventory costs
|
| Media: |
- Saturated steam†, water and inert gases
|
Typical Physical Properties
| |
99004
|
98004
|
98504
|
| Color |
|
Mahogany |
Black |
Black |
| Composition |
|
Graphite with nitrile |
Carbon with SBR |
Carbon with nitrile |
| Temperature1 |
Maximum
Minimum
Continuous Max. |
1,000°F (540°C)
-100°F (-75°C)
650°F (340°C) |
900°F (480°C)
-100°F (-75°C)
650°F (340°C) |
900°F (480°C)
-100°F (-75°C)
650°F (340°C) |
Pressure1
Continuous Max. |
psig (bar) |
2,000 (138) |
2,000 (138) |
2,000 (138) |
P x T, max.
(psig x °F)
(bar x °C) |
1/32", 1/16"
(0.8mm, 1.6mm)
1/8"
(3.2mm) |
700,000
(25,000)
350,000
(12,000) |
700,000
(25,000)
350,000
(12,000) |
700,000
(25,000)
350,000
(12,000) |
Sealability (ASTM F37B)2
ASTM Fuel A
Nitrogen |
ml/hr
ml/hr |
0.3
0.6 |
0.3
0.6 |
0.3
0.6 |
|
Creep Relaxation (ASTM F38)(1/32") |
% |
9 |
15 |
15 |
|
Compressibility Average (ASTM F36) |
% |
9 |
8 |
8 |
|
Recovery (ASTM F36) |
% |
>55 |
>55 |
>55 |
Tensile Strength across grain
(ASTM F152) |
psi
(N/mm2) |
1,800
(12) |
1,800
(10) |
1,800
(12) |
| Density |
lbs/ft3 (g/cm3) |
110 (1.76) |
105 (1.68) |
105 (1.68) |
Gas Permeability
(DIN 3535 Part 4)3
|
cc/min. |
0.015 |
0.015 |
0.015 |
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 1/16" (1.6mm) sheet thickness.
* Values do not constitute specification limits All styles are furnished with an anti-stick parting agent as standard.
NOTES:
† For steam service above 150 psig, contact Engineering Refer to "Military Specifications" section under "Gasketing Terms" for order/ inquiry requirements. To ensure receipt of product with the
required STR 508 approvals, certification will be required; associated fees based on quantity.
1 Based on ANSI RF flanges at our preferred torque. When approaching 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/mm2), Int. pressure = 9.8 psig (0.7 bar)
Nitrogen:
- Gasket load = 3,000 psi (20.7 N/mm2), Int. pressure = 30 psig (2 bar)
3 DIN 3535 Part 4 Gas Permeability, cc/min. (1/16" thick)
Nitrogen:
- Gasket load = 4,640 psi (32 N/mm2), 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.
