Polymer type glass transition

temperature (° C)

melting tem-

perature (° C) heat

resistance* oil

resistance* flex

resistance* typical products and

applications

Polyisoprene (natural rubber, isoprene rubber) (industrial polymers, major) -70 25 P P E tires, springs, shoes, adhesives

Styrene-butadiene copolymer (industrial polymers, major)

(styrene-butadiene rubber) (industrial polymers, major) -60 -- P P G tire treads, adhesives, belts

Polybutadiene (butadiene rubber) (industrial polymers, major) -100 5 P P F tire treads, shoes, conveyor belts

Acrylonitrile-butadiene copolymer (industrial polymers, major)

(nitrile rubber) (industrial polymers, major) -50 to -25 -- G G F fuel hoses, gaskets, rollers

Isobutylene-isoprene copolymer (industrial polymers, major)

(butyl rubber) (industrial polymers, major) -70 -5 F P F tire liners, window strips

Ethylene-propylene monomer (EPM) (industrial polymers, major),

ethylene-propylene-diene monomer (EPDM) (industrial polymers, major) -55 -- F P F flexible seals, electrical insulation

Polychloroprene (neoprene) (industrial polymers, major) -50 25 G G G hoses, belts, springs, gaskets

Polysulfide (Thiokol) (industrial polymers, major) -50 -- F E F seals, gaskets, rocket propellants

Polydimethyl siloxane (silicone) (industrial polymers, major) -125 -50 G F F seals, gaskets, surgical implants

Fluoroelastomer (industrial polymers, major) -10 -- E E F O-rings, seals, gaskets

Polyacrylate elastomer (industrial polymers, major) -15 to -40 -- G G F hoses, belts, seals, coated fabrics

Polyethylene (chlorinated, chlorosulfonated) (industrial polymers, major) -70 -- G G F O-rings, seals, gaskets

Styrene-isoprene-styrene (SIS), styrene- (industrial polymers, major)

butadiene-styrene (SBS) block copolymer (industrial polymers, major) -60 -- P P F automotive parts, shoes, adhesives

EPDM-polypropylene blend (industrial polymers, major) -50 -- F P F shoes, flexible covers

*E = excellent, G = good, F = fair, P = poor