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Rulon Bearings

Precision Polymer Engineering N90M Nitrile Rubber
Categories: Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)

Material Notes: Nitrile Rubber, 85-95 °IRHD. Meets British Standard BS2751 BA90. Medium acrylonitrile (ACN) content. Copolymer of acrylonitrile and butadiene. ASTM designation = NBR. ISO designation = NBR.

Applications: Excellent resistance to petroleum based oils and fuels. Excellent compression set, tear and abrasion resistance. Good water resistance but poor against ozone and weather.

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Mechanical PropertiesMetricEnglishComments
Hardness, Shore A 9090°IRHD; ASTM D1415
Tensile Strength, Yield 12.5 MPa1810 psiASTM D412
Elongation at Break 100 %100 %ASTM D412
Compression Set 25 %
@Temperature 70.0 °C,
Time 86400 sec
25 %
@Temperature 158 °F,
Time 24.0 hour
ASTM D395
 
Thermal PropertiesMetricEnglishComments
Maximum Service Temperature, Air 120 °C248 °F
Minimum Service Temperature, Air -30.0 °C-22.0 °F
 -10.0 °C14.0 °FTemperature at which stiffness does not exceed 70 Mpa
Flash Point >= 300 °C>= 572 °F

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