Durlon® 8400 Compressed Non Asbestos Phenolic Fiber

Phenolic Fiber with NBR Rubber Binder Compressed Sheet Gasket Material

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 non asbestos fibers, 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.

Pressure - Temperature Information: PxT Chart

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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