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| Sulphuric Acid on the WebTM | Technical Manual | DKL Engineering, Inc. |
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DKL Engineering, Inc.
Handbook of Sulphuric Acid Manufacturing
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Materials of Construction
- Gaskets
(Strong Acid)
May 16, 2010
| Introduction | Associated Links |
The following are recommended gaskets for use in
strong sulphuric acid service.
Acid Concentration : 90% to 100% H2SO4
Temperature: 248°F (120°C)
The ability of a gasket to effect a seal depends not only on the quality of the materials, but also on the thickness of the material, the design of the flanges, the amount of pressure exerted on the gasket by the bolts, and how the gasket is assembled into the flanges and tightened. Consult the manufacturer for specifics regarding your application.
| Manufacturer | Garlock | Flexitallic | Durabla | Thermoseal Inc. | |||
| Designation | GYLON 3500 | GYLON 3540 | GYLON 3545 |
Sigma 511 | Sigma 600 | DURLON 9000 |
KLINGERtop-chem-2000 |
| Colour | Fawn with Black Brand | White with Black Brand |
White with Black Brand |
Fawn | White | - | - |
| Compositon | PTFE with Silica |
Microcellular PTFE |
Microcellular PTFE |
PTFE with Silica | Highly Compressible PTFE | PTFE with Silica |
PTFE |
| Temperature
- Maximum - Minimum (Continuous) |
500°F
(260°C) |
500°F
(260°C) |
500°F
(260°C) |
500°F (260°C) -350°F (-212°C) |
500°F (260°C) -350°F (-212°C) |
520°F
(271°C) |
- |
| Pressure - Maximum (Continuous) | 1200
psig |
1200
psig |
1200
psig |
1235 psig (1/16" thickness) |
1235 psig (1/16" thickness) |
1500 psig (103 bar) |
- |
| Compressibility Range (ASTM F36) |
7-12% |
70-85% |
60-70% |
7% (1/16" thickness) |
68% (1/16" thickness) |
8-16% |
2% |
| Recovery (ASTM F36) |
40% |
8% |
15% |
44% (1/16" thickness) |
6% (1/16" thickness) |
40% |
55% |
| M Values : Thickness - 1/16" |
5.0 |
3.0 |
2.6 |
1.4 | 1.4 | - |
- |
| - 1/8" | 5.0 |
3.0 |
2.0 |
1.4 | 1.4 | - |
- |
| - 3/16" | - |
2.0 |
2.0 |
- | - | - |
- |
| - 1/4" | - |
2.0 |
7.0 |
- | - | - |
- |
| Y Values : Thickness - 1/16" |
2750 psi |
1700 psi |
1500 psi |
2300 psi | 1600 psi | - |
- |
| - 1/8" | 3500 psi |
2200 psi |
2200 psi |
2300 psi | 1600 psi | - |
- |
| - 3/16" | - |
2200 psi |
2200 psi |
- | - | - |
- |
| - 1/4" | - |
2500 psi |
3700 psi |
- | - | - |
- |
Samples
| Gylon 3540 |
|
| Gylon 3454 |
|
| DURLON 9000 |
|
