Elastomer

Rating

Natural Rubber, Isoprene

4

Butadiene Styrene, Butadiene

4

Butyl

4

Ethylene Propylene

4

Nitrile

2

HNBR

4

Epichlorohydrin

---

Polychloroprene

3

Chlorosulfonated Polyethylene

4

Chlorinated Polyethylene

---

Urethane

4

Polyacrylate

4

Polysulfide

2

Silicone

4

Ethylene acrylic elastomers

---

Fluorosilicone

2

Tetrafluoroethylene/Propylene

---

Fluoroelastomer - Dipolymer

1

Fluoroelastomer - Terpolymer

1

Perfluoroelastomer

1