SBR rubber is a synthetic polymer with similar properties to Natural rubber. Because of this, it is often compounded to

 exhibit properties not normally associated with a Natural compound, such as extended ozone resistance, and is also 

blended with other rubbers to enhance features such as tensile strength and elasticity.

SBR rubber is a synthetic polymer with similar properties to Natural rubber. Because of this, it is often compounded to

 exhibit properties not normally associated with a Natural compound, such as extended ozone resistance, and is also 

blended with other rubbers to enhance features such as tensile strength and elasticity.