Elastomer

Rating

Natural Rubber, Isoprene

4

Butadiene Styrene, Butadiene

4

Butyl

4

Ethylene Propylene

4

Nitrile

1

HNBR

1

Epichlorohydrin

---

Polychloroprene

3

Chlorosulfonated Polyethylene

3

Chlorinated Polyethylene

---

Urethane

---

Polyacrylate

4

Polysulfide

2

Silicone

1

Ethylene acrylic elastomers

---

Fluorosilicone

1

Tetrafluoroethylene/Propylene

---

Fluoroelastomer - Dipolymer

4

Fluoroelastomer - Terpolymer

4

Perfluoroelastomer

1