*Properties : Good inherent tack, high tensile, good hysteresis, good hot tensile and hot tear properties.

*Properties : High resilience, good low temperature flexibility, good flex fatigue characteristics and high abrasion resistance.

*Trade Name : Synpol(Ameripol), Budene(Goodyear), Buna CB(Mobay Chem.), Taktene(Polysar)

*Properties : The most widely used rubber in the word is SBR. At present, SBR constitutes about 40% of the total synthetic rubber consumed in the United States. It has good abrasion resistance.

*Properties : Low rates of gas permeability, thermal stability, ozone and weathering resistance, vibration damping and higher coefficients of friction, chemical and moisture resistance.

*Properties : Since the terpolymers are highly saturated, the compounds have excellent resistance to ozone and oxidation without the use of any antidegradants.

*Trade Name : Epsyn(Copolymer Rubber), Keltan(DSM), Nordel(DuPont), Royalene(Uniroyal Chem.), Vistalon(Exxon)