Styrene Butadiene

Typical Trade Names:

  • Ameripol CB - Ameripol, Inc.
  • Budene - Goodyear Tire & Rubber Co.
  • Dione - Firestone Synthetic Rubber Latex Co.
  • Trans 4 or Cis 4 - Phillips Chemical Co.

Polybutadiene is an elastomer with properties very similar to natural rubber. Its physical properties are not quite up to natural rubber. However, in some cases its low temperature characteristics are better. Butadiene is primarily a tire polymer.

SBR rubber is probably best known under its old designation Buna S or GRS (Government Rubber Styrene) which refers to the rubber originally made during World War II in United States Government-owned plants as a substitute for natural rubber.

However, when the manufacture of this elastomer was turned over to private industry, its designation was changed to indicate the chemical composition; styrene and butadiene rubber. Tires account for most of its usage.

Together with SBR and natural rubber account for approximately 90% of total world rubber consumption. Very little of these two materials is used in seals.

SBR is recommended for:

  • Automotive brake fluid
  • Alcohols (low molecular weight)
  • Water.

SBR is not recommended for:

  • Ozone
  • Petroleum Oils
  • Sunlight

 

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