Durlon® 7900

Durlon® 7900 is an economy grade general service gasket sheet material made with NBR (Nitrile Butadiene Rubber) binder for mild service in piping and equipment with applications in steam, hydrocarbons and refrigerants. An economical alternative when service ranges and applications are not severe.

This series is made from aramid and a NBR general-purpose material. The economy compressed sheets are proven to significantly lower emission levels. Each material in this series is color-coded for easy identification; all full-sized economy compressed sheets are date coded and quality assurance traceable.

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Category:
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.
Durlon® 7900, 7925 and 7950 contain high-strength aramid fibers bonded with high-grade Nitrile (NBR) rubber.
Color Off-White
Fiber System Aramid/Inorganic
Binder NBR
Temp. Min.
Temp. Max.
Continuous, Max		 -73°C (-100°F)
371°C (700°F)
260°C (500°F)
Pressure, max, bar (psi) 83 (1,200)
Density, g/cc (lbs/ft3) 1.7 (106)
Compressibility, % 7-17
Recovery, % 40
Creep Relaxation, % 20
Tensile Strength, MPa (psi) 11 (1,600)
Sealability
ASTM 2378 (Nitrogen)		 0.05 cc/min
Fluid Resistance, ASTM F146 IRM 903 Oil 5hrs at 300°F
Thickness Increase, %
Weight Increase, %		 0-15
15
Fluid Resistance, ASTM Fuel B 5hrs at 70°F
Thickness Increase, %
Weight Increase, %		 0-10
12
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.

California Proposition 65 Compliant
RoHS Reach Declaration Compliant
1/16” 1/8”
m 3.0 3.2
Y psi (MPa) 3,347 (23.1) 3,385 (23.3)
Gb psi (MPa) 497 (3.4) 486 (3.4)
a 0.226 0.276
Gs psi (MPa) 3 (0.02) 0.4 (0.003)