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Doit Rubber Products Co.,Ltd

Add: No.4 Shui-Ku-Gong-Ye 1 Rd, Guanjingtou, Fenggang, Dongguan, Guangdong, China. 523705

Contacts:Ashley Bai

Tel: 86-769-82030980

Phone: 86-15323527607

Fax: 86-769-82030983

E-mail: sales5@doitrubber.com

www.doit-rubber.com

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Styrene-Butadiene (SBR)

Doit Rubber Products Co.,Ltd | Updated: Sep 02, 2017

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

-55°~100°C
-67°~212°F


Primary Uses

  • Hydraulic brake systems seals and diaphragms

  • Plumbing applications


Performs Well in…

  • Water

  • Alcohol

  • Silicone oil and grease

  • Non-mineral oil based brake fluid

  • Weak acids


Doesn’t Perform Well in…

  • Petroleum oils and fuels

  • Aromatic, aliphatic, or halogenated hydrocarbons

  • Strong acids

  • Mineral oils


Description
SBR is a copolymer of styrene and butadiene. Compound properties are similar to those of natural rubber. It is also known as Buna S, or GR-S (Government RubberStyrene). SBR was first produced under government control between 1930 and 1950 as a replacement for natural rubber.
The main use for styrene butadiene today is in the manufacture of automobile tires. O-ring usage has been on decline since the introduction of ethylene propylene (EPDM). SBR is mostly used in seals for non-mineral oil based brake fluid applications.

Application Advantages

  • Good resistance to brake fluids

  • Good resistance to water

Limitations

  • Poor petroleum oil and solvent resistance

  • Poor weather resistance

  • Seldom used in modern sealing applications