Elastomer

Rating

Natural Rubber, Isoprene

3

Butadiene Styrene, Butadiene

3

Butyl

2

Ethylene Propylene

2

Nitrile

1

HNBR

1

Epichlorohydrin

---

Polychloroprene

3

Chlorosulfonated Polyethylene

2

Chlorinated Polyethylene

---

Urethane

---

Polyacrylate

4

Polysulfide

---

Silicone

2

Ethylene acrylic elastomers

---

Fluorosilicone

1

Tetrafluoroethylene/Propylene

---

Fluoroelastomer - Dipolymer

1

Fluoroelastomer - Terpolymer

1

Perfluoroelastomer

1