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.

FDA Approved Conforms to the requirements of 21CFG 177.2600

Composition:

DURLON® 8500 contains high-strength aramid and inorganic fibres bonded with high-grade nitrile (NBR) rubber.

Fire Testing:

DURLON® 8500 has successfully passed the API 6FB fire test [avg. temperature >650°C, 30 mins, 40 bar, 1 ml (inch/min.) maximum allowable leakage].

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 Physical Properties:

Colour	Green
Fibre System	Aramid-Inorganic
Binder	NBR
Temperature Min Max Max, continuous	-73°C (-100°F) 371°C (700°F) 287°C (548°F)
Pressure, max, bar (psi)	103 (1,500)
Density, g/cc (lbs/ft3)	1.7 (106)
Compressibility, % ASTM F36	8-16
Recovery, % ASTM F36	50
Creep Relaxation, % ASTM F38	20
Tensile Strength across grain ASTM F152, MPa (psi)	13.8 (2,000)
Fluid Resistance, ASTM F 146 IRM 903 Oil 5 hours at 149°C (300°F) Thickness Increase, % Weight Increase, % ASTM Fuel B 5 hours at 21°C (70°F) Thickness Increase, % Weight Increase, %	0-15 150-10 10
Sealability, ASTM F37 (Fuel A), ml/hr ASTM F37 (Nitrogen), ml/hr ASTM F2378 (Nitrogen), cc/min	0.01 0.4 0.03
Volume Resistivity, ohm-cm ASTM D257	4.2 x 1013
Dielectric Breakdown, kV/mm (V/mil) ASTM D149	11.7 (297)
Gasket Factors m Y, psi Gb, psi a Gs, psi	1/16″ 1/8″ 2.7 4.2 2,359 (16.3) 2,931 (20.2) 650 (4.5) 400 (2.8) 0.330 0.350 200 (1.4) 20 (0.1)
Flexibility ASTM F147	10x