Elastomer

Rating

Natural Rubber, Isoprene

2

Butadiene Styrene, Butadiene

2

Butyl

3

Ethylene Propylene

3

Nitrile

2

HNBR

2

Epichlorohydrin

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Polychloroprene

1

Chlorosulfonated Polyethylene

2

Chlorinated Polyethylene

1

Urethane

4

Polyacrylate

4

Polysulfide

2

Silicone

2

Ethylene acrylic elastomers

4

Fluorosilicone

2

Tetrafluoroethylene/Propylene

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Fluoroelastomer - Dipolymer

1

Fluoroelastomer - Terpolymer

1

Perfluoroelastomer

1