Elastomer

Rating

Natural Rubber, Isoprene

4

Butadiene Styrene, Butadiene

4

Butyl

1

Ethylene Propylene

1

Nitrile

4

HNBR

4

Epichlorohydrin

4

Polychloroprene

4

Chlorosulfonated Polyethylene

1

Chlorinated Polyethylene

3

Urethane

4

Polyacrylate

4

Polysulfide

4

Silicone

2

Ethylene acrylic elastomers

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Fluorosilicone

3

Tetrafluoroethylene/Propylene

2

Fluoroelastomer - Dipolymer

4

Fluoroelastomer - Terpolymer

4

Perfluoroelastomer

1