Seals Eastern, Inc.
Seals, gaskets, and o-rings
Compound 7346 Data Sheet
Description: HNBR for cold temp (-50C) and/or aqueous service
Physical Properties:
ASTM Method Property Avg. Value Min. Value
D412 Method A Tensile Strength  2600 psi  2400 psi
Ultimate Elongation  300%  210%
Stress at Elongation    
- M25  250 psi   psi
- M50  325 psi  300 psi
- M100  550 psi  510 psi
Strain Energy/ Unit Volume at 20% elongation  35 psi  
Calculated Shear Modulus, G  480 psi  
Calculated Youngs Modulus, E  1450 psi  
E-secant from the initial slope  1390 psi  
D624, Die B Tear Strength   psi  
Max Value Min Value
D2240, Type A Durometer Hardness  75 points  73 points
D297, 15 Specific Gravity  1.19  
D395, Test B Compression Set Avg. Value  
22 hrs @ 302F %  
70 hrs @ 302F 25%  
336 hrs @ 302F %  
D865 Dry Heat Aging
Change in Tensile Change in Elongation Change in Durometer
70 hrs @ 302F -12% -21% 10 points
168 hrs @ 302F % %  points
336 hrs @ 302F % %  points
1000 hrs @ 302F  %  %  points
  Temperature Data  
D746 Brittle Point  F
D1329 Temp Retraction TR-10  -31F
Glass Transition  -50F
Max Operating Temp  300F
Rev.  4/30/2013 Shelf Life (years) 10


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Format Rev: 11/17/11