Durlon® 8900 Aramid-Graphite/NBR

Application:

DURLON® 8900 is a premium grade compressed non-asbestos sheet gasket material for service conditions to 496°C (925°F) and continuous operating temperatures of -73ºC to 400°C (-100ºF to 752°F) or 13.8 MPa (2,000 psi).  It is suitable for water, saturated steam, superheated steam, oil, mild alkalis and acids, hydrocarbons and solvents.

Composition:

DURLON® 8900 was specially developed to withstand high temperature and pressure application with good chemical resistance. It contains high strength fibers and graphite fillers bonded with high performance nitrile (NBR) synthetic rubber. Rubber level was optimized to obtain a flexible sheet with good cutting properties without compromising on physical properties at high temperature.

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).

Fire-safe:

DURLON ® 8900 has achieved the requirements of the Fire Test Certification ANSI/API 607, 6th Edition with zero leakage.

 

Typical Physical Properties:

Colour Black
Fibre System Aramid-Inorganic
Binder NBR
Temperature
Min
Max
Max, continuous
-73°C (-100°F)
496°C (925°F)
400°C (752°F)
Pressure, max, bar (psi) 138 (2,000)
Density, g/cc (lbs/ft3) 1.6 (100)
Compressibility, %
ASTM F36
7-17
Recovery, %
ASTM F36
50
Creep Relaxation, %
ASTM F38
15
Tensile Strength across grain
ASTM F152, MPa (psi)
13.8 (2,000)
Fluid Resistance, ASTM F 146
IRM 903 Oil 5 hours at 149°C (300°F)
Thickness Increase, %
Weight Increase, %
ASTM Fuel B 5 hours at 21°C (70°F)
Thickness Increase, %
Weight Increase, %
3
15
.
.
4
12
Sealability,
ASTM F2378 (Nitrogen, cc/min)
0.2
Volume Resistivity, ohm-cm
ASTM D257
4.01 x 1013
Gasket Factors
m
Y, psi
Gb, psi
a
Gs, psi
1/16″                  1/8″
4.8                       7.3
4,851 (33.4)       3,730 (25.7)
915 (6.3)             567 (3.9)
0.428                  0.556
0.02 (0.0001)   0.26 (0.02)


Flexibility,
ASTM F147
12x
Stress Relaxation, DIN 52913
@ 7,252 MPa (psi)
16 hr @ 175°C (347°F)
16 hr @ 300°C (572°F)
6,500 (44.8) Minimum
6,000 (41.4) Minimum

*ASTM Testing

Sort Products by

Sheet SizeThicknessProduct NumberSheet Weight lbs(kgs)
60 x 63 (1524 x 1600)1/32" (0.8mm)BE08-060-0638 (3.6)
60 x 126 (1524 x 3200)1/32" (0.8mm)BE08-060-12615 (6.8)
60 x 63 (1524 x 1600)1/16" (1.5mm)BE15-060-06315 (6.8)
60 x 126 (1524 x 3200)1/16" (1.5mm)BE15-060-12631 (14.1)
120 x 126 (3048 x 3200)1/16" (1.5mm)BE15-120-12661 (27.7)
60 x 63 (1524 x 1600)1/8" (3.0mm)BE30-060-06330 (13.6)
60 x 126 (1524 x 3200)1/8" (3.0mm)BE30-060-12660 (27.2)
120 x 126 (3048 x 3200)1/8" (3.0mm)BE30-120-126120 (54.4)