Elastomer

Rating

Natural Rubber, Isoprene

2

Butadiene Styrene, Butadiene

2

Butyl

2

Ethylene Propylene

2

Nitrile

3

HNBR

4

Epichlorohydrin

4

Polychloroprene

2

Chlorosulfonated Polyethylene

1

Chlorinated Polyethylene

1

Urethane

4

Polyacrylate

4

Polysulfide

2

Silicone

3

Ethylene acrylic elastomers

4

Fluorosilicone

4

Tetrafluoroethylene/Propylene

2

Fluoroelastomer - Dipolymer

4

Fluoroelastomer - Terpolymer

4

Perfluoroelastomer

1