Seals Eastern, Inc.

Compound 7157 Data Sheet

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Compound 7157 Data Sheet
Description: 
Physical Properties:
ASTM Method Property Avg. Value Min. Value
D412 Method A Tensile Strength  3436 psi  2837 psi
Ultimate Elongation  170%  100%
Stress at Elongation    
- M25  641 psi   psi
- M50  952 psi  406 psi
- M100  1779 psi  1200 psi
Strain Energy/ Unit Volume at 20% elongation  72 psi  
Calculated Shear Modulus, G  1672 psi  
Calculated Youngs Modulus, E  5032 psi  
E-secant from the initial slope  4730 psi  
D624, Die B Tear Strength  296 lbf/inch  
    Max Value Min Value
D2240, Type A Durometer Hardness  91 points  86 points
D297, 15 Specific Gravity  1.294  
       
D395, Test B Compression Set Avg. Value  
22 hrs @ 212F 10%  
70 hrs @ 212F 15%  
336 hrs @ 212F 28%  
D865 - Dry Heat Aging:
Hours Aged Change in Tensile Change in Elongation Change in Durometer
70 hrs @ 212F -1.4% 29.6% 3 points
168 hrs @ 212F -2% 3.2% 3 points
336 hrs @ 212F -5.7% -18.4% 4 points
1000 hrs @ 212F  -14.5%  -37.6% 6 points
Temperature Properties and Shelf Life:
ASTM / Other Description Value
D746 Brittle Point  F
D1329 Temp Retraction TR-10  F
  Glass Transition  -13F
  Max Operating Temp  F
  Shelf Life (years)

Meets specification: R-1-4, R-4-2  
    
    
Rev. 11/25/2003

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