Elastomer

Rating

Natural Rubber, Isoprene

4

Butadiene Styrene, Butadiene

4

Butyl

4

Ethylene Propylene

3

Nitrile

4

HNBR

4

Epichlorohydrin

---

Polychloroprene

4

Chlorosulfonated Polyethylene

4

Chlorinated Polyethylene

---

Urethane

2

Polyacrylate

3

Polysulfide

1

Silicone

4

Ethylene acrylic elastomers

---

Fluorosilicone

3

Tetrafluoroethylene/Propylene

---

Fluoroelastomer - Dipolymer

3

Fluoroelastomer - Terpolymer

3

Perfluoroelastomer

1