Durlon® 9000

Durlon® 9000 is for use in process piping and equipment in chemical, pulp & paper, food & beverage and other general industrial applications where resistance to highly aggressive chemicals is required. In addition, the shape of the fillers do not allow wicking which can cause corrosion on flange surfaces and conforms to FDA requirements. And has achieved numerous certifications: WRAS (Water Regulations Advisory Scheme) Approved Material, USP Class VI, FDA and (EC) 1935/2004 & EU (10/2011) compliant, BAM oxygen service, TA-luft (VDI Guideline 2440), ABS-PDA & Pamphlet 95, the chlorine institute, DNV-GL. And has passed the API 6FA fire test.


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Durlon® 9000 is used extensively in chemical, pulp and paper, food and beverage and the railroad tank car industries. It has been tested and approved for liquid chlorine, caustics, and liquid oxygen. DURLON® 9000 is designed for applications where resistance to highly aggressive chemicals is required. Available in unpigmented white as style 9000N, both styles 9000 and 9000N, (including branding) conform to FDA requirements. Durlon® 9000 has been proven through the “Test Protocol” of the Chlorine Institute and is listed as an acceptable gasket material for dry chlorine service (both liquid and gaseous) in Pamphlet 95, Edition 3 of the Chlorine Institute. Additionally, Durlon® 9000 was independently tested and approved for caustics service by a major chemical/chlorine manufacturer. Unlike generic glass fibre-filled PTFE, the shape of the fillers used in Durlon® 9000 do not allow wicking which can cause corrosion on flange faces. As of July 2018, 6 inch Class 300 Durlon® 9000 gasket passed the API Standard 6FA Fire Test. The test fixture was subjected to an external flame of 875°C (1607°F) average for 30 minutes. The measured leakage was 1.8 ml/min, where the max allowable limit is 1200ml/sec. Durlon® 9000/9000N has been independently tested and certified (BAM) for oxygen service at pressures up to 585 psi (40 bar) and temperatures up to 200°C (392°F), and for service in liquid oxygen. Gaskets for oxygen service can be supplied from distributor stocks, providing proper cleaning procedures for oxygen service are followed before installation.
Various shapes of inorganic fillers have been homogeneously blended with pure PTFE resins to give Durlon® 9000 its physical and mechanical properties. It is suitable for use in steel flanges and will not exhibit the cold flow problems associated with virgin PTFE or the hardness problems of some other filled PTFE products. It cuts easily and separates cleanly from flanges after use. Durlon® 9000 is made with Teflon™ fluoropolymer. Teflon™ is a trademark of The Chemours Company FC, LLC used under license by Triangle Fluid Controls Ltd.
Color: Blue

Fiber: Inorganic

Min: -350°F (-212°C)
Max: 520°F (271°C)
Continuous, max: 500°F (260°C)

Pressure, max: 1500 psi (103 bar)

Density: 138 lbs/ft3 (2.2 g/cc)

Compressibility: 8-16%

Recovery: 40%

Creep Relaxation: 30%

Tensile Strength: 2000 psi (13.8 MPa)

Sealability ASTM F2378 (Nitrogen): 0.01 cc/min

Leakage, mbar .1 (m .5), TA-Luft (VDI 2440), TBar (14.5 psi) @180°C (392°F):
7.55 x 10-6

Volume Resistivity, ohm-cm, ASTM D257: 1.0 x 105

Dielectric Breakdown, ASTM D149, kV/mm (V/mil): 16 (406)

Gasket Factors:
m: 2.2
Y psi (MPa): 1937 (13.4)
Gb psi (MPa): 639 (4.4)
a: 0.220
Gs psi (MPa): 55 (0.379)

m: 4.6
Y psi (MPa): 1639 (11.3)
Gb psi (MPa): 495 (3.4)
a: 0.262
Gs psi (MPa): 65 (0.448)
API Standard 6FA Fire Test, TA-Luft (VDI 2440), BAM, Pamphlet 95 (Chlorine Institute), FDA Compiant, USP Class VI Certified, ABS-PDA Certified, EC 1935/2004 Compliant, DNV-GL Accreditation, RoHS Reach Declaration