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Durlon 7900 CNA Sheet Gaskets
Brand: Durlon® Sealing Solutions
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.
Specifications
Gasket Factors
- 1/16”
- 1/8”
Gasket Factors (m)
- 3.0
- 3.2
Gasket Factors (Y psi (MPa))
- 3,347 psi / 23.1 MPa
- 3,385 psi / 23.3 MPa
Gasket Factors (Gb)
- 497 psi / 3.4 MPa
- 486 psi / 3.4 MPa
Gasket Factors (a)
- 0.226
- 0.276
Gasket Factors (Gs)
- 3 psi / 0.02 MPa
- 0.4 psi / 0.003 MPa
Certifications
- RoHS Reach Declaration Compliant
- California Proposition 65 Compliant
Color
- Off White
Fiber System
- Aramid/Inorganic
Binder
- NBR
Minimum Temperature
- -73° C / -100° F
Maximum Temperature
- 371° C / 700° F
Continuous, Maximum Temperature
- 260° C / 500° F
Maximum Pressure
- 83 bar / 1,200 psi
Density
- 1.7 g/cc - 106 lbs/ft³
Compressibility
- 7-17 %
Recovery
- 40%
Creep Relaxation
- 20%
Tensile Strength
- 11 MPa / 1,600 psi
Nitrogen Sealability, ASTM 2378
- 0.05 cc/min
Fluid Resistance, ASTM F146 IRM 903 Oil 5 hours at 300° F Thickness Increase
- 0-15 %
Fluid Resistance, ASTM F146 IRM 903 Oil 5 hours at 300° F Weight Increase
- 15%
ASTM Fuel B 5 Hours at 70° F Thickness Increase
- 0-10 %
ASTM Fuel B 5 Hours at 70° F Weight Increase
- 12%
Flexibility, ASTM F147
- 10x
- Chemical Processing
- General Industry
- Mining
- OEM Services
- Rail-Tank Car