Natural Rubber (NR)

- Sep 01, 2017-

General Information
ASTM D2000
SAE J 200 Codes AA
Relative Cost Low

-50°~70°C
-58°~158°F


Primary Uses

  • Rubber to metal bonded vibration isolators and mounts

  • Automotive diaphragms

  • FDA application for food and beverage seals


Performs Well in…

  • Alcohols

  • Organic acids


Doesn’t Perform Well in…

  • Ozone

  • Petroleum oils

  • Aromatic, aliphatic, or halogenated hydrocarbons


Description
Natural rubber is the vulcanized product of the juice of the Hevea tree (latex). Until the invention of synthetic elastomers in the 1930’s, NR was the only polymer available for O-ring manufacture. NR has high tensile strength, high resilience, high abrasion and high tear resistance, good friction surface, and excellent adhesion to metals. Mainly used for dampeners due to its ability to absorb vibration. Also used in food and beverage, and non-hydraulic sealing applications.


Application Advantages

  • Excellent compression set

  • Good resilience and abrasion

  • Good surface friction properties


Limitations

  • Poor resistance to attack by petroleum oils

  • Poor ozone, UV resistance

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