Elastomer

Rating

Natural Rubber, Isoprene

4

Butadiene Styrene, Butadiene

4

Butyl

4

Ethylene Propylene

4

Nitrile

1

HNBR

---

Epichlorohydrin

---

Polychloroprene

2

Chlorosulfonated Polyethylene

4

Chlorinated Polyethylene

---

Urethane

3

Polyacrylate

1

Polysulfide

3

Silicone

4

Ethylene acrylic elastomers

---

Fluorosilicone

1

Tetrafluoroethylene/Propylene

---

Fluoroelastomer - Dipolymer

1

Fluoroelastomer - Terpolymer

1

Perfluoroelastomer

1