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Durlon 8400® Gasketing Material

Phenolic Fiber with NBR Rubber Binder Compressed Sheet Gasket
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Durlon 8400 Sheet Gasket Material

Application

With an extremely wide pH application range, Durlon® 8400 can be used in process piping and equipment in chemical, pulp and paper, and other general industrial applications. A unique high-performance compressed sheet Durlon® 8400 is an excellent gasket material for use in steam, mild caustics and acids in Class 150 and 300 service.

Composition

Durlon® 8400 contains high temperature phenolic fibers and minerals combined with high-grade Nitrile NBR rubber. It exibits higher temperature limits than aramid based materials and the handling and cutting characteristics are greatly improved over carbon and glass fiber products.

Anti-Stick Properties

Much effort has gone into improving the anti-stick release agents of all compressed Durlon® products. All Durlon® compressed gasket materials have passed the MIL-G-24696B Navy Adhesion Test (366°F/48 hrs).

pH Range

Durlon® 8400 has a pH application range of 2 to 13 at room temperature, the widest any compressed sheet gasket material produced today. This makes Durlon® 8400 especially suitable in pulp and paper, and chemical plant applications.

Typical Properties

Thickness 1/16"
Color: Gold
Fiber: Phenolic
Binder: NBR
Fluid Service: Saturated Steam, Oils, Dilute Acides & Alkalis, Hydrocarbons, Solvents
Temperature
      Min:
      Max:
      Max,continuous:

-100°F (-73°C)
800°F (427°C)
554°F (290°C)
Pressure: max, bar (psi) 103 (1,500)
Density: g/cc (lbs/ft3) 1.7 (106)
Compressibility, ASTM F36: 8 to 16%
Recovery ASTM F36: 50%
Creep Relaxation: 25%
Tensile Strength, ASTM F152: 1,800 psi (12.4 MPa)
Fluid Resistance - ASTM F146
IRM 903 oil, 5 h/300°F (149°C)

      Thickness Increase:
      Weight Increase:
ASTM Fuel B 5 h/70°F (21°C)
      Thickness Increase:
      Weight Increase:




0-15
150-10%
15%
Sealability:
ASTM F37 (Fuel A), ml/hr
ASTM F37 (Nitrogen, ml/hr
ASTM F 2378 (Nitrogen), cc/min

0.01
0.3
0.03
Volume Resistivity, Ohm-cm
ASTM D257

3.1 x 1013
Dielectric Breakdown, kV/mm
ASTM D149

14.6 (371)
Flexibility, ASTM F147: 8x

Note: ASTM properties based on 1/16" sheet thickness except ASTM F38, which is based on 1/32" sheet thickness. This is a general guide only and should not be the sole means of accepting or rejecting this material. The data listed here falls within the normal range of product properties but should not be used to establish specification limits nor used alone as the basis of design.

*For applications above Class 300, consult your representative.

M&Y and Proposed ASTM Gasket Constants

Thickness 1/16" 1/8"
M 2.9 4.5
Y psi (MPa) 2410 (16.6) 3967 (27.4)
Gasket Constants
Gb psi (MPa) 2000 (13.8) 1076 (7/4)
a 0.194 0.289
Gs psi (MPa) 340 (2.3) 94 (0.7)
*Gasket Constants based on proposed ASTM Draft 10.01

Available Sheet Sizes

Nominal Thickness Sheet Sizes Order Code Sheets per Roll Weight / Sheet lbs (kg)
1/64" (0.4 mm) 60 x 63
60 x 126
1524 x 1600
1254 x 3200
GD05-060-063
GD05-060-126
20
10
5 (2.3)
9 (4.1)
1/32" (0.8 mm) 60 x 63
60 x 126
1524 x 1600
1254 x 3200
GD08-060-063
GD08-060-126
20
10
7 (3.2)
14 (6.4)
1.0 mm 60 x 63
60 x 126
120 x 126
1524 x 1600
1254 x 3200
3048 x 3200
GD10-060-063
GD10-060-126
GD10-060-126
20
10
2
9 (4.1)
18 (8.2)
36 (16.3)
1/16" (1.5 mm) 60 x 63
60 x 126
120 x 126
1524 x 1600
1254 x 3200
3048 x 3200
GD15-060-063
GD15-060-126
GD15-060-126
10
5
2
14 (6.4)
27 (12.2)
55 (24.9)
2.0 mm 60 x 63
60 x 126
120 x 126
1524 x 1600
1254 x 3200
3048 x 3200
GD20-060-063
GD20-060-126
GD20-060-126
10
5
2
18 (8.2)
36 (16.3)
73 (33.1)
3/32" (2.5 mm) 60 x 63
60 x 126
1524 x 1600
1254 x 3200
GD25-060-063
GD25-060-126
8
4
23 (10.4)
46 (20.9)
1/8" (3.0 mm) 60 x 63
60 x 126
120 x 126
1524 x 1600
1254 x 3200
3048 x 3200
GD30-060-063
GD30-060-126
GD30-060-126
8
4
1
27 (12.2)
55 (24.9)
109 (49.4)

Note: Please inquire about availability of 4.0mm and 5.0mm thicknesses and other sizes not listed.

Warning: Durlon gasket materials should never be recommended when both the temperature and the pressure are at the maximums listed. Properties and applications shown are typical. No application should be undertaken by anyone without independent study and evaluation for suitability. Never use more than one gasket in one flange joint, and never reuse a gasket. Improper use or gasket selection could cause property damage and/or serious personal injury. The data reported is a compilation of field testing, field service reports and/or in-house testing. While the utmost care has gone into publishing the information contained herein, we assume no responsibility for errors. The information and specifications contained in this website are subject to change without notice. This revision cancels and obsoletes all previous editions.

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