Durlon ® 9200

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Barium Sulfate Filler with Pure PTFE Resin Filled PTFE Gasket

ASTM F104: F452111-A9B5E11K6M6

Equivalent to NES 5420 / Teadit ###

DURLON® 9200 is a filled PTFE gasket material designed for use in process piping and equipment in chemical, pulp and paper, food and beverage and other general industrial applications. It can be used where resistance to highly aggressive chemicals is required.

DURLON® 9200 is suitable for hydrofluoric acid service at moderate concentrations and temperatures or where a barium sulfate filled PTFE gasket material is specified. It is suitable for service within a temperature range of –350°F to 520°F (-212°C to 271°C) or with pressure up to 1500 psi (10.3 MPa). Available as Style 9200 (green, branded) or Style 9200W (granite white, branded), both styles conform to FDA requirements.

Barium sulfate fillers are homogeneously blended with pure PTFE resins to give DURLON® 9200 its physical and mechanical properties. Independent testing has shown the fillers in DURLON® 9200 to be more evenly dispersed than filled PTFE with layered construction. The result is more consistent physical and mechanical properties without the voids, separation and chemical compatibility problems found in layered filled PTFE. It is suitable for use in steel flanges, will not exhibit the cold flow problems associated with virgin or generic skived PTFE or the hardness problems of some other filled PTFE products. It has excellent sealability, cuts easily and separates cleanly from flanges after use.


Available Sheet Sizes:

Nominal Thickness
Sheets Sizes
Order Code - 9200w
  Weight / Sheet lbs (kg)
Inches mm
1/64" (0.5 mm) 60 x 60 1524 x 1524 TW05-060-060   5 (2.3)
1/32" (0.8mm) 60 x 60 1524 x 1524 TW08-060-060   11 (5)
1/16" (3.0 mm) 60 x 60 1524 x 1524 TW15-060-060   22 (10)
3/32" (2.5 mm) 60 x 60 1524 x 1524 TW25-060-060   33 (15)
1/8" (3.0 mm) 60 x 60 1524 x 1524 TW30-060-060   40 (20)

Note: 1mm thickness or, 60" x 120" (1.5m x 3m) sheet sizes available on special order, other custom lengths available on request.

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:

Thickness 1/16"
Gasket Constants    
Gb psi (MPa) 153 (1.05) 96 (0.66)
a 0.36 0.437
Gs psi (MPa) 15 (0.1) 14 (0.1)

*Gasket Constants based on proposed ASTM Draft 10.01


Typical Properties:

 Color: Style 9200w Granite White, Branded
 Fiber: Barium Sulphate
Temperature -350 to 520° F (-212 to 271° C)
Pressure, max: 1500 psig (103 bar)
Fluid Service: Steam, Nitric Acid, Chlorine Dioxide, Titanium Dioxide, Hydrogen Peroxide, Liquors, Brown Stock, Sodium Dioxide, Phosphoric Acid, Caustics, Hydrogen Fluoride, Chrome Plating Solutions, Refrigerants
Density:  2.5 g/cm3 (156 lbs. / ft3)
Tensile Strength, ASTM F152:  1,920 psi (13.2 MPa)
Compressibility, ASTM F36: 8 to 16% 
Recovery ASTM F36: 35%
          ASTM F37 (Fuel A):
          ASTM F37 (Nitrogen):

0.01 m/hr
0.02 m/hr
 DIN 3535 Gas Permeability:  0.01 cc/min
 Creep Relaxation ASTM F38:  30%
 Flexibility, ASTM F147:  5x
*Conforms to the requirements of 21 CFR 177.1550 for food and drug contact.
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.