Durlon® 9200 is a filled PTFE gasket material designed for use in aggressive chemicals. Including caustics, hydrogen peroxide, sodium hypochlorite, nitric acid, liquors and digester in pulp and paper service. Applications In the chemical, pharmaceutical and plastics industries include butadiene, hydrofluoric acid, vinyl chloride, methyl methacrylates, and styrene. It is also used extensively in railroad tank-car applications and can be used where resistance to highly aggressive chemicals is required. Style 9200 (granite white, branded) conforms to FDA requirements.
Note: That as a class, PTFE gasket materials are not recommended in liquid oxygen services where there is thermal cycling due to thermal shock and the difference of the coefficient of expansion between PTFE and steel.
Composition: 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.
Certifications: FDA compliant, ABS-PDA Certified, BAM, TA-Luft (VDI 2440), RoHS Reach Declaration
Physical Properties:
Color: Granite White
Fiber: Barium Sulfate
Temperature:
Min: -350°F (-212°C)
Max: 520°F (271°C)
Continuous, max: 500°F (260°C)
Pressure, max: 1500 psi (103 bar)
Density: 156 lbs/ft3 (2.5 g/cc)
Compressibility: 8-16%
Recovery: 35%
Creep Relaxation: 30%
Tensile Strength: 1920 psi (13.2 MPa)
Sealability, cc/min ASTM F2378 (Nitrogen): 0.01
Volume Resistivity, ohm-cm, ASTM D257: 7.55 x 10-6
Gasket Factors:
THICKNESS: 1/16″
m: 1.5
Y psi (MPa): 952 (6.5)
Gb psi (MPa): 153 (1.1)
a: 0.360
Gs psi (MPa): 15 (0.1)
THICKNESS: 1/8″
m: 4.2
Y psi (MPa): 827 (5.7)
Gb psi (MPa): 96 (0.66)
a: 0.437
Gs psi (MPa): 14 (0.1)