Durlon® 8500

Aramid / Inorganic Fiber with NBR Rubber Binder Compressed Sheet Gasket

ASTM F104: F712120-A9B3E12K5L151M6

 
 

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Application
Our workhorse material, DURLON® 8500 is excellent in steam, natural gas, soybean processing and with new generation refrigerants.  A high quality general service gasket material for use in a wide range of services in pulp and paper, food, beverage, pharmaceutical, chemical, refinery, gas pipeline and general industry.  DURLON® 8500 exhibits good compressibility and recovery, excellent sealability, flexibility and cutting characteristics.

Composition
DURLON® 8500 contains high-strength aramid and inorganic fibers bonded with high-grade Nitrile (NBR) rubber.

Fire Testing
DURLON® 8500 has successfully passed a modified version of the API 607 fire test.  The duration of the direct flame portion of the test is 30 minutes and the flange temperature must reach 1200°F in the first 15 minutes.  The internal pressure is held at a constant 30 psig.  After the flame is shut off, the fixture is immediately water quenched with an overhead water blast. Leakage must not exceed 100 ml/min after a 6 minute cool down to successfully pass the test. Subsequent leakage testing is also performed.

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).

Available Sheet Sizes:

Nominal Thickness
Sheets Sizes
Order Code
Sheets per Roll
Weight / Sheet lbs (kg)
Inchesmm
1/64" (0.4 mm)
60 x 63
60 x 126
1524 x 1600
1254 x 3200
DG05-060-063
DG05-060-126
20
10
3 (1.4)
7 (3.2)
1/32" (0.8 mm)60 x 63
60 x 126
1524 x 1600
1254 x 3200
DG08-060-063
DG08-060-126
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
DG10-060-063
DG10-060-126
DG10-060-126
20
10
2
9 (4.1)
19 (8.6)
37 (16.8)
1/16" (1.5mm)60 x 63
60 x 126
120 x 126
1524 x 1600
1254 x 3200
3048 x 3200
DG15-060-063
DG15-060-126
DG15-060-126
10
5
2
14 (6.4)
28 (12.7)
55 (25.0)
2.0 mm60 x 63
60 x 126
120 x 126
1524 x 1600
1254 x 3200
3048 x 3200
DG20-060-063
DG20-060-126
DG20-060-126
10
5
2
18 (8.2)
38 (17.2)
74 (33.6)
3/32" (2.5 mm)
60 x 63
60 x 126
1524 x 1600
1254 x 3200
DG25-060-063
DG25-060-126
8
4
22 (10.0)
44 (20.0) 
1/8" (3.0 mm)
60 x 63
60 x 126
120 x 126
1524 x 1600
1254 x 3200
3048 x 3200
DG30-060-063
DG30-120-126
DG30-120-126
8
4
1
28 (12.7)
56 (25.0)
110 (50.0)
3/16" (5.0 mm)
60 x 63
60 x 126
120 x 126
1524 x 1600
1254 x 3200
3048 x 3200
DG50-060-063
DG50-160-126
DG50-120-126
4
2
1
42 (19.1)
83 (37.6)
165 (75.8)

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.


M&Y and Proposed ASTM Gasket Constants:

Thickness1/16"
1/8"
 M2.7  4.2
Y psi (MPa)
2359 (16.27) 2931 (20.21)
Gasket Constants   
Gb psi (MPa)650 (4.5)400 (208)
a
0.330.35
Gs psi (MPa)200 (1.4)20 (0.1)

*Gasket Constants based on proposed ASTM Draft 10.01


Typical Properties:

 Color:Green, Branded
 Fiber:Aramid / Inorganic
Binder:
Nitrile (NBR)
Fluid Service: Saturated Steam, Oils, Fuels, Dilute Acids & Alkalis, Solvents, Refrigerants
Density:
 1.7 g/cm3 (106 lbs. / ft3)
Tensile Strength, ASTM F152:
 2000 psi (13.8 MPa)
Compressibility, ASTM F36:
8 to 16% 
Recovery ASTM F36:
50%
Temperature
          Range:
          Continuous, max:
 
-100 to 700° F (-73 to 371° C)
548° F (287° C)
Pressure, max:  1500 psig (103 bar)
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 to 15%
 15%

 0 to 10%
 10%
 Sealability
          ASTM F37 (Fuel A):
          ASTM F37 (Nitrogen):

0.01 m/hr
0.4 m/hr
 DIN 3535 Gas Permeability: 0.03 cc/min
 Creep Relaxation ASTM F38:
 20%
 Flexibility, ASTM F147:
 10x
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.
 

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