Seals Eastern, Inc.
Seals, gaskets, and o-rings
Compound 5861 Data Sheet
Description: Fluorosilicone for cold temperature service. Meets MIL-R-25988B
Physical Properties:
ASTM Method Property Avg. Value Min. Value
D412 Method A Tensile Strength  1360 psi  1260 psi
Ultimate Elongation  340%  245%
Stress at Elongation    
- M25  150 psi   psi
- M50  214 psi  205 psi
- M100  320 psi  302 psi
Strain Energy/ Unit Volume at 20% elongation  18 psi  
Calculated Shear Modulus, G  329 psi  
Calculated Youngs Modulus, E  988 psi  
E-secant from the initial slope  898 psi  
D624, Die B Tear Strength  220 psi  
Max Value Min Value
D2240, Type A Durometer Hardness  51 points  48 points
D297, 15 Specific Gravity  1.51  
D395, Test B Compression Set Avg. Value  
22 hrs @ 350F 15%  
70 hrs @ 350F %  
336 hrs @ 350F %  
D865 Dry Heat Aging
Change in Tensile Change in Elongation Change in Durometer
70 hrs @ 350F -10.4% -15% 7 points
168 hrs @ 350F % %  points
336 hrs @ 350F % %  points
1000 hrs @ 350F  %  %  points
  Temperature Data  
D746 Brittle Point  F
D1329 Temp Retraction TR-10  -61F
Glass Transition  -60F
Max Operating Temp  F
Rev.  9/15/1997 Shelf Life (years)


LEGAL NOTICE: Seals Eastern makes no representations or warranties, implied or otherwise, on the accuracy or completeness of the data herein.

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Format Rev: 11/17/11