Elastomer

Rating

Natural Rubber, Isoprene

4

Butadiene Styrene, Butadiene

4

Butyl

3

Ethylene Propylene

3

Nitrile

3

HNBR

3

Epichlorohydrin

---

Polychloroprene

4

Chlorosulfonated Polyethylene

4

Chlorinated Polyethylene

---

Urethane

2

Polyacrylate

4

Polysulfide

1

Silicone

4

Ethylene acrylic elastomers

---

Fluorosilicone

3

Tetrafluoroethylene/Propylene

---

Fluoroelastomer - Dipolymer

4

Fluoroelastomer - Terpolymer

4

Perfluoroelastomer

1