Seals Eastern, Inc.

Compound 7202 Data Sheet

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Compound 7202 Data Sheet

70-duro NBR

ASTM Method Property Avg. Value Min. Value
D412 Method A Tensile Strength  3215 psi  2480 psi
Ultimate Elongation  575%  300%
Stress at Elongation    
- M25  247 psi  
- M50  275 psi  200 psi
- M100  466 psi  420 psi
Strain Energy/ Unit Volume at 20% elongation  22 psi  
Calculated Shear Modulus, G  416 psi  
Calculated Youngs Modulus, E  1250 psi  
E-secant from the initial slope  1175 psi  
D624, Die B Tear Strength    
D297, 15 Specific Gravity  1.19  
    Max Value Min Value
D2240, Type A Durometer Hardness  75 points  65 points
       
D395, Test B Compression Set Avg. Value  
22 hrs @ 212F 10%  
70 hrs @ 212F 14%  
336 hrs @ 212F 21%  

ASTM D865 - Dry Heat Aging:

Hours Aged Change in Tensile Change in Elongation Change in Durometer
70 hrs @ 212F 3.4% -4.8% 1 points
168 hrs @ 212F 9.2% -22.4% 3 points
336 hrs @ 212F 7.7% -34.8% 4 points
1000 hrs @ 212F  8.4%  -49.7% 7 points

Temperature Properties and Shelf Life:

ASTM / Other Description Value
D746 Brittle Point  
D1329 Temp Retraction TR-10  
  Glass Transition  -13F
  Max Operating Temp  
  Shelf Life (years) 10

Rev. 5/16/2018

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