Elastomer

Rating

Natural Rubber, Isoprene

2

Butadiene Styrene, Butadiene

2

Butyl

2

Ethylene Propylene

2

Nitrile

1

HNBR

1

Epichlorohydrin

2

Polychloroprene

2

Chlorosulfonated Polyethylene

3

Chlorinated Polyethylene

2

Urethane

1

Polyacrylate

---

Polysulfide

4

Silicone

4

Ethylene acrylic elastomers

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Fluorosilicone

1

Tetrafluoroethylene/Propylene

---

Fluoroelastomer - Dipolymer

1

Fluoroelastomer - Terpolymer

1

Perfluoroelastomer

1