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Freudenberg Simrit N431 Nitrile Elastomer (NBR)

Category Polymer , Thermoset , Rubber or Thermoset Elastomer (TSE)
Manufacturer Freudenberg Simrit
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Freudenberg Simrit N431 Nitrile Elastomer (NBR).pdf
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Material Notes:
General Purpose; Internal Lubricant. Inferior resistance to ozone, sunlight and natural aging; poor resistance to oxygenated solvents. All testing done on AS568-214 size o-rings
Mechanical Properties Metric English Comments
Hardness, Shore A 60
60
Original Properties; ASTM D2240
50

@Temperature 23.0 °C
 50

@Temperature 73.4 °F
 ASTM Reference Fuel B Immersion, 70 hours; ASTM D2240
61

@Temperature 23.0 °C
 61

@Temperature 73.4 °F
 ASTM Fuel A Immersion, 70 hours; ASTM D2240
63

@Temperature 100 °C
 63

@Temperature 212 °F
 Air Aging, 70 hours; ASTM D2240
63

@Temperature 100 °C
 63

@Temperature 212 °F
 ASTM IRM-903 Oil Immersion, 70 hours; ASTM D2240
64

@Temperature 100 °C
 64

@Temperature 212 °F
 Water Resistance, 70 hours; ASTM D2240
Tensile Strength, Ultimate 12.9 MPa
1870 psi
Original Properties; ASTM D412 Die C
7.4304 MPa

@Temperature 23.0 °C
 1077.7 psi

@Temperature 73.4 °F
 ASTM Reference Fuel B Immersion, 70 hours; ASTM D412 Die C
13.18 MPa

@Temperature 23.0 °C
 1912 psi

@Temperature 73.4 °F
 ASTM Fuel A Immersion, 70 hours; ASTM D412 Die C
13.66 MPa

@Temperature 100 °C
 1981 psi

@Temperature 212 °F
 Air Aging, 70 hours; ASTM D412 Die C
15.82 MPa

@Temperature 100 °C
 2294 psi

@Temperature 212 °F
 ASTM IRM-903 Oil Immersion, 70 hours; ASTM D412 Die C
Elongation at Break 486 %
486 %
Original Properties; ASTM D412 Die C
292 %

@Temperature 23.0 °C
 292 %

@Temperature 73.4 °F
 ASTM Reference Fuel B Immersion, 70 hours; ASTM D412 Die C
379.08 %

@Temperature 100 °C
 379.08 %

@Temperature 212 °F
 Air Aging, 70 hours; ASTM D412 Die C
448 %

@Temperature 100 °C
 448 %

@Temperature 212 °F
 ASTM IRM-903 Oil Immersion, 70 hours; ASTM D412 Die C
476.28 %

@Temperature 23.0 °C
 476.28 %

@Temperature 73.4 °F
 ASTM Fuel A Immersion, 70 hours; ASTM D412 Die C
Compression Set 13 %

@Temperature 100 °C,
Time 79200 sec
 13 %

@Temperature 212 °F,
Time 22.0 hour
 ASTM D395
Descriptive Properties Value Comments
Volume Change (%), ASTM D471 -1.1
ASTM IRM-903 Oil Immersion, 70 hours at 100°C
-1.2
ASTM Fuel A Immersion, 70 hours at 23°C
17.1
ASTM Reference Fuel B Immersion, 70 hours at 23°C
-4.8
Water Resistance, 70 hours at 100°C
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