Elastomer

Rating

Natural Rubber, Isoprene

4

Butadiene Styrene, Butadiene

4

Butyl

3

Ethylene Propylene

3

Nitrile

1

HNBR

---

Epichlorohydrin

1

Polychloroprene

3

Chlorosulfonated Polyethylene

2

Chlorinated Polyethylene

---

Urethane

2

Polyacrylate

1

Polysulfide

4

Silicone

1

Ethylene acrylic elastomers

---

Fluorosilicone

1

Tetrafluoroethylene/Propylene

---

Fluoroelastomer - Dipolymer

1

Fluoroelastomer - Terpolymer

1

Perfluoroelastomer

1