Elastomer

Rating

Natural Rubber, Isoprene

2

Butadiene Styrene, Butadiene

2

Butyl

2

Ethylene Propylene

2

Nitrile

2

HNBR

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Epichlorohydrin

2

Polychloroprene

2

Chlorosulfonated Polyethylene

3

Chlorinated Polyethylene

1

Urethane

3

Polyacrylate

4

Polysulfide

2

Silicone

2

Ethylene acrylic elastomers

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Fluorosilicone

4

Tetrafluoroethylene/Propylene

1

Fluoroelastomer - Dipolymer

4

Fluoroelastomer - Terpolymer

4

Perfluoroelastomer

1