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Rulon Bearings

Seals Eastern 7168 Nitrile Rubber
Categories: Polymer; Thermoplastic; Elastomer, TPE; Thermoplastic Elastomer, Melt-Processible Rubber

Material Notes: Nitrile for oil & gas service

Information provided by Seals Eastern, Inc.

Key Words: NBR
Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Specific Gravity 1.278 g/cc1.278 g/ccASTM D297, 15
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore A >= 77>= 77ASTM D2240, Type A
 8383AVG; ASTM D2240, Type A
 83
@Treatment Temp. 100 °C,
Time 252000 sec
83
@Treatment Temp. 212 °F,
Time 70.0 hour
After Dry Heat Aging; ASTM D865
 87
@Treatment Temp. 100 °C,
Time 605000 sec
87
@Treatment Temp. 212 °F,
Time 168 hour
After Dry Heat Aging; ASTM D865
 88
@Treatment Temp. 100 °C,
Time 1.21e+6 sec
88
@Treatment Temp. 212 °F,
Time 336 hour
After Dry Heat Aging; ASTM D865
 89
@Treatment Temp. 100 °C,
Time 3.60e+6 sec
89
@Treatment Temp. 212 °F,
Time 1000 hour
After Dry Heat Aging; ASTM D865
Tensile Strength at Break >= 18.49 MPa>= 2682 psiASTM D412 Method A
 24.52 MPa3556 psiAVG; ASTM D412 Method A
 25.376 MPa
@Treatment Temp. 100 °C,
Time 252000 sec
3680.5 psi
@Treatment Temp. 212 °F,
Time 70.0 hour
After Dry Heat Aging; ASTM D865
 25.94 MPa
@Treatment Temp. 100 °C,
Time 605000 sec
3762 psi
@Treatment Temp. 212 °F,
Time 168 hour
After Dry Heat Aging; ASTM D865
 26.58 MPa
@Treatment Temp. 100 °C,
Time 3.60e+6 sec
3855 psi
@Treatment Temp. 212 °F,
Time 1000 hour
After Dry Heat Aging; ASTM D865
 27.39 MPa
@Treatment Temp. 100 °C,
Time 1.21e+6 sec
3972 psi
@Treatment Temp. 212 °F,
Time 336 hour
After Dry Heat Aging; ASTM D865
Tensile Stress at Strain  >= 2.04 MPa
@Strain 50 %
>= 296 psi
@Strain 50 %
Minimum; ASTM D412 Method A
 3.47 MPa
@Strain 25 %
503 psi
@Strain 25 %
Average; ASTM D412 Method A
 >= 3.98 MPa
@Strain 100 %
>= 577 psi
@Strain 100 %
Minimum; ASTM D412 Method A
 5.40 MPa
@Strain 50 %
783 psi
@Strain 50 %
Average; ASTM D412 Method A
 10.53 MPa
@Strain 100 %
1527 psi
@Strain 100 %
Average; ASTM D412 Method A
Elongation at Break >= 200 %>= 200 %ASTM D412 Method A
 330 %330 %AVG; ASTM D412 Method A
 199.6 %
@Treatment Temp. 100 °C,
Time 3.60e+6 sec
199.6 %
@Treatment Temp. 212 °F,
Time 1000 hour
After Dry Heat Aging; ASTM D865
 237 %
@Treatment Temp. 100 °C,
Time 605000 sec
237 %
@Treatment Temp. 212 °F,
Time 168 hour
After Dry Heat Aging; ASTM D865
 255.7 %
@Treatment Temp. 100 °C,
Time 1.21e+6 sec
255.7 %
@Treatment Temp. 212 °F,
Time 336 hour
After Dry Heat Aging; ASTM D865
 298.3 %
@Treatment Temp. 100 °C,
Time 252000 sec
298.3 %
@Treatment Temp. 212 °F,
Time 70.0 hour
After Dry Heat Aging; ASTM D865
Modulus of Elasticity 0.02373 GPa3.442 ksiASTM D412 Method A
Poissons Ratio 0.500.50Calculated
Shear Modulus 0.007908 GPa1.147 ksiASTM D412 Method A
Secant Modulus 0.02219 GPa3.219 ksiASTM D412 Method A
Compression Set  10.6 %
@Temperature 100 °C,
Time 79200 sec
10.6 %
@Temperature 212 °F,
Time 22.0 hour
ASTM D395, Test B
 12.1 %
@Temperature 100 °C,
Time 252000 sec
12.1 %
@Temperature 212 °F,
Time 70.0 hour
ASTM D395, Test B
 23.3 %
@Temperature 100 °C,
Time 1.21e+6 sec
23.3 %
@Temperature 212 °F,
Time 336 hour
ASTM D395, Test B
 
Thermal PropertiesMetricEnglishComments
Glass Transition Temp, Tg -25.0 °C-13.0 °FASTM D1329
 
Descriptive Properties
Strain Energy / Unit Volume at 20% Elongation (psi)61

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