Seals Eastern, Inc.

Compound 7145 Data Sheet

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Compound 7145 Data Sheet

78-duro FKM

ASTM Method Property Avg. Value Min. Value
D412 Method A Tensile Strength  2800 psi  1883 psi
Ultimate Elongation  180%  118%
Stress at Elongation    
- M25  306 psi  
- M50  544 psi  400 psi
- M100  1230 psi  698 psi
Strain Energy/ Unit Volume at 20% elongation  32 psi  
Calculated Shear Modulus, G  596 psi  
Calculated Youngs Modulus, E  1788 psi  
E-secant from the initial slope  1681 psi  
D624, Die B Tear Strength  210 lbf/inch  
D297, 15 Specific Gravity  1.943  
    Max Value Min Value
D2240, Type A Durometer Hardness  78 points  75 points
       
D395, Test B Compression Set Avg. Value  
22 hrs @ 392F 11%  
70 hrs @ 392F 19%  
336 hrs @ 392F 24%  

ASTM D865 - Dry Heat Aging:

Hours Aged Change in Tensile Change in Elongation Change in Durometer
70 hrs @ 392F -12% 2% 0 points
168 hrs @ 392F -2% 10% 1 points
336 hrs @ 392F -5% 2% 0 points
1000 hrs @ 392F  9%  13% 0 points

Temperature Properties and Shelf Life:

ASTM / Other Description Value
D746 Brittle Point  
D1329 Temp Retraction TR-10  
  Glass Transition  -4F
  Max Operating Temp  
  Shelf Life (years) 15

Rev. 3/1/2002

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