Durlon® 8400

With an extremely wide pH application range (2-13 at room temp.) Durlon® 8400 can be used in process piping and equipment in chemical, pulp & paper and other general industrial applications. As a unique high-performance compressed sheet, Durlon® 8400 is also an excellent gasket material for use in steam, mild caustics and acids.

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Durlon® 8400 can be used in process piping and equipment in chemical, pulp and paper, and other general industrial applications. Also, as 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.
Durlon® 8400 contains high temperature phenolic fibres and minerals combined with high-grade nitrile (NBR) rubber. It exhibits higher temperature limits than aramid based materials and the handling and cutting characteristics are greatly improved over carbon and glass fibre products. Durlon® 8400 has a pH application range of 2 to 13 at room temperature, the widest any compressed sheet gasket material produced today.
Color Gold
Fiber System Phenolic
Binder NBR
Temp. Min.
Temp. Max.
Continuous, Max
-73°C (-100°F)
427°C (800°F)
290°C (554°F)
Pressure, max, bar (psi) 103 (1,500)
Density, g/cc (lbs/ft3) 1.7 (106)
Compressibility, % 8-16
Recovery, % 50
Creep Relaxation, % 25
Tensile Strength, MPa (psi) 12.4 (1,800)
Sealability
ASTM 2378 (Nitrogen)
0.03 cc/min
Fluid Resistance, ASTM F146 IRM 903 Oil 5hrs at 300°F
Thickness Increase, %
Weight Increase, %
0-15
15
Fluid Resistance, ASTM Fuel B 5hrs at 70°F
Thickness Increase, %
Weight Increase, %
0-10
15
Flexibility, ASTM F147 8x
Volume Resistivity, ohm-cm ASTM D257 3.1 x 1013
Dielectric Breakdown, ASTM D149, kV/mm (V/mil) 14.6 (371)

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.

California Proposition 65 Compliant
RoHS Reach Declaration Compliant
1/16” 1/8”
m 2.9 4.5
Y psi (MPa) 2,410 (16.6) 3,967 (27.4)
Gb psi (MPa) 380 (2.6) 391 (2.7)
a 0.311 0.321
Gs psi (MPa) 0.01 (0.001) 0.014 (0.001)