Seals Eastern, Inc.

Compound 7240 Data Sheet

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Compound 7240 Data Sheet

52-duro EPDM

ASTM Method Property Avg. Value Min. Value
D412 Method A Tensile Strength  1463 psi  893 psi
Ultimate Elongation  322%  206%
Stress at Elongation    
- M25  89 psi  
- M50  139 psi  113 psi
- M100  246 psi  180 psi
Strain Energy/ Unit Volume at 20% elongation  10 psi  
Calculated Shear Modulus, G  194 psi  
Calculated Youngs Modulus, E  583 psi  
E-secant from the initial slope  548 psi  
D624, Die B Tear Strength    
D297, 15 Specific Gravity    
    Max Value Min Value
D2240, Type A Durometer Hardness  52 points  48 points
D395, Test B Compression Set Avg. Value  
22 hrs @ F  
70 hrs @ F  
336 hrs @ F  

ASTM D865 - Dry Heat Aging:

Hours Aged Change in Tensile Change in Elongation Change in Durometer
70 hrs @ F
168 hrs @ F
336 hrs @ F
1000 hrs @ F    

Temperature Properties and Shelf Life:

ASTM / Other Description Value
D746 Brittle Point  
D1329 Temp Retraction TR-10  
  Glass Transition  -60F
  Max Operating Temp  
  Shelf Life (years)

Rev. 8/30/1995


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