Seals Eastern, Inc.
Seals, gaskets, and o-rings
designed and manufactured for the
most demanding applications throughout
the world.


134 PEARL STREET
RED BANK, NJ 07701-0520 USA
TEL: 732 747 9200  FAX: 732 747 3647

Rubber o-rings, orings, rubber seals, packer elements, gaskets, and rubber bonded to metal for sealing applications para Espanol Para portugues para Espanol

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Seals Eastern, Inc.
Compound 4503 Data Sheet
70-duro NR
Description: Natural rubber
Physical Properties:
ASTM Method Property Avg. Value Min. Value
D412 Method A Tensile Strength  1998 psi  1240 psi
Ultimate Elongation  325%  284%
Stress at Elongation    
- M25   psi   psi
- M50  217 psi  164 psi
- M100  477 psi  305 psi
Strain Energy/ Unit Volume at 20% elongation  15 psi  
Calculated Shear Modulus, G   psi  
Calculated Youngs Modulus, E   psi  
E-secant from the initial slope   psi  
D624, Die B Tear Strength   psi  
Max Value Min Value
D2240, Type A Durometer Hardness  75 points  60 points
D297, 15 Specific Gravity    
         
D395, Test B Compression Set Avg. Value  
22 hrs @ F %  
70 hrs @ F %  
336 hrs @ F %  
Shelf Life years 
D865 Dry Heat Aging
Change in Tensile Change in Elongation Change in Durometer
70 hrs @ F % %  points
168 hrs @ F % %  points
336 hrs @ F % %  points
1000 hrs @ F  %  %  points
  Temperature Data  
D746 Brittle Point  F
D1329 Temp Retraction TR-10  F
Glass Transition  -99F
Max Operating Temp  F
Rev.  11/10/1995

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

Copyright 2000 Seals Eastern, Inc.

SEALS EASTERN
MOLDING SUCCESS FOR 50 YEARS.

ISO 9001:2008 CERTIFIED - BVQi (NA), Inc.

FastDash ™ is a trademark of Seals Eastern, Inc.; OringOnline ® is a registered trademark of Seals Eastern, Inc.; 7182 ™ is a trademark of Seals Eastern, Inc.; AFLAS ® is a registered trademark of Asahi Glass Co., Ltd.; Viton ® is a registered trademark of Dupont Performance Elastomers, LLC.

Format Rev:11/25/09