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Sulphuric Acid on the WebTM Technical Manual DKL Engineering, Inc.

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Sulphuric Acid on the Web

Introduction
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DKL Engineering, Inc.

Handbook of Sulphuric Acid Manufacturing
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Preface
Contents
Feedback

Sulphuric Acid Decolourization
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Preface
Table of Contents

Process Engineering Data Sheets - PEDS
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Table of Contents

Introduction

Bibliography of Sulphuric Acid Technology
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Preface
Contents

Sulphuric Acid Plant Specifications
 

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Materials of Construction - Gaskets (Strong Acid)
May 16, 2010

Introduction Associated Links

Acid Piping


Introduction

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)
-350°F (-212°C)

500°F (260°C)
-350°F (-212°C)

500°F (260°C)
-350°F (-212°C)

500°F (260°C)
-350°F (-212°C)
500°F (260°C)
-350°F (-212°C)

520°F (271°C)
-350°F (-212°C)

-
Pressure - Maximum (Continuous)

1200 psig
(83 bar)

1200 psig
(83 bar)

1200 psig
(83 bar)

1235 psig
(1/16" thickness)
1235 psig
(1/16" thickness)

1500 psig (103 bar)

-
Compressibility Range
(ASTM F36)

7-12%

70-85%
(1/16" thickness)

60-70%
(1/16" thickness)

7%
(1/16" thickness)
68%
(1/16" thickness)

8-16%

2%
(ASTM F36J)

Recovery
(ASTM F36)

40%

8%
(1/16" thickness)

15%
(1/16" thickness)

44%
(1/16" thickness)
6%
(1/16" thickness)

40%

55%
(ASTM F36J)

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

g3540.GIF (4739 bytes)

Gylon 3454

g3545.GIF (6293 bytes)

DURLON 9000

9000.jpg (5614 bytes)