Elastomer

Rating

Natural Rubber, Isoprene

4

Butadiene Styrene, Butadiene

4

Butyl

4

Ethylene Propylene

4

Nitrile

2

HNBR

---

Epichlorohydrin

1

Polychloroprene

2

Chlorosulfonated Polyethylene

2

Chlorinated Polyethylene

---

Urethane

2

Polyacrylate

2

Polysulfide

1

Silicone

4

Ethylene acrylic elastomers

2

Fluorosilicone

2

Tetrafluoroethylene/Propylene

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Fluoroelastomer - Dipolymer

1

Fluoroelastomer - Terpolymer

1

Perfluoroelastomer

1