SPECIFICATION SHEET
March 2011

DURLON® 7900/7925/7950
Aramid with NBR Rubber Binder
COMPRESSED SHEET GASKET MATERIAL
ASTM F104: F712120-A9B3E22K5L151M5


APPLICATION:

 An economy grade general service compressed sheet with NBR rubber binder for mild service in piping and equipment and OEM applications in steam, hydrocarbons and refrigerants.  An economical alternative when service ranges and applications are not severe.

COMPOSITION:

 DURLON® 7900, 7925 and 7950 contain high-strength aramid fibers bonded with high-grade Nitrile (NBR) rubber.

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).

TYPICAL PROPERTIES:

   Color:    Style 7900 - Off-White, branded
   Style 7925 - Green, branded
   Style 7950 - Blue, branded
   Fiber:    Aramid
   Binder:    Nitrile (NBR)
   Fluid Services:    Steam, Water, Inert Gases, Oils, Fuels,
   Dilute Acids & Alkalis
   Density:    1.7 g/cm3 (106 lbs./ft3)
   Tensile Strength, ASTM F152:    1700 psi (11.7 MPa)
   Compressibility, ASTM F36:    7 to 17%
   Recovery ASTM F36:    40%
   Temperature
          Range:
          Continuous, max:		   
   -100 to 700°F (-73 to 371°C)
   500°F (260°C)
   Pressure, max:    1200 psig (83 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%
   12%
   Sealability
          ASTM F37 (Fuel A):
          ASTM F37 (Nitrogen):		   
   0.03 mL/hr
   0.5 mL/hr
   Dielectric Breakdown, ASTM D149:    11.0 kV/mm (279 V/mil)
   DIN 3535 Gas Permeability:    0.05 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.

M&Y VALUES:

THICKNESS

1/16"

1/8"

      M
       Y psi (MPa)

3.0
3347 (23.08)

3.2
3385 (23.34)

AVAILABLE SHEET SIZES:

Nominal
Thickness

Sheet Sizes
inches                mm  

Order Code
7900

Order Code
7950

Sheets
Per Roll

Approx.
Wt/Sheet
lbs (kg)
1/64" 0.5mm

60 x 63
60 x 126

1524 x 1600
1254 x 3200

DW05-060-063
DW05-060-126

DS05-060-063
DS05-060-126

20
10

3 (1.4)
7 (3.2)
1/32" 0.8mm

60 x 63
60 x 126

 1524 x 1600
1254 x 3200

DW08-060-063
DW08-060-126

DS08-060-063
DS08-060-126

20
10

7 (3.2)
14 (6.4)
1/16" 1.5mm

60 x 63
60 x 126
120 x 126

 1524 x 1600
1254 x 3200
3048 x 3200

DW15-060-063
DW15-060-126
DW15-120-126

DS15-060-063
DS15-060-126
DS15-120-126

10
5
2

14 (6.4)
28 (12.7)
55 (25.0)
 2.0mm

60 x 63
60 x 126
120 x 126

 1524 x 1600
1254 x 3200
3048 x 3200

DW20-060-063
DW20-060-126
DW20-120-126

DS20-060-063
DS20-060-126
DS20-120-126

10
5
2

18 (8.2)
38 (17.2)
74 (33.6)
3/32" 2.5mm

60 x 63
60 x 126

 1524 x 1600
1254 x 3200

DW25-060-063
DW25-060-126

DS25-060-063
DS25-060-126

8
4

22 (10.0)
44 (20.0)
1/8" 3.0mm

60 x 63
60 x 126
120 x 126

 1524 x 1600
1254 x 3200
3048 x 3200

DW30-060-063
DW30-060-126
DW30-120-126

DS30-060-063
DS30-060-126
DS30-120-126

8
4
1

28 (12.7)
55 (25.0)
110 (50.0)

Note: 1mm available on request.  Please inquire about sizes and  thicknesses not listed.

Open PDF file of this page
 
 

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.

GASKET RESOURCES INC.
 

CONTACT INFORMATION:

Phone:

Fax:

E-mail
 

USA

 

Sales:

 

140 Sheree Blvd
P.O. Box 565
Exton, PA 19341-0565

(866) 707-7300
(610) 363-5800
 

(610) 363-5881

 

     sales@durlon.com

    

Technical:

 Houston, Texas (713) 856-9445  

tech@durlon.com

INTERNATIONAL

   (613) 968-1100 (613) 968-1099
     intl@durlon.com

 
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