Elastomer

Rating

Natural Rubber, Isoprene

3

Butadiene Styrene, Butadiene

3

Butyl

1

Ethylene Propylene

1

Nitrile

2

HNBR

2

Epichlorohydrin

2

Polychloroprene

3

Chlorosulfonated Polyethylene

1

Chlorinated Polyethylene

1

Urethane

4

Polyacrylate

4

Polysulfide

4

Silicone

2

Ethylene acrylic elastomers

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Fluorosilicone

2

Tetrafluoroethylene/Propylene

1

Fluoroelastomer - Dipolymer

1

Fluoroelastomer - Terpolymer

1

Perfluoroelastomer

1