Elastomer

Rating

Natural Rubber, Isoprene

4

Butadiene Styrene, Butadiene

4

Butyl

4

Ethylene Propylene

4

Nitrile

4

HNBR

4

Epichlorohydrin

---

Polychloroprene

3

Chlorosulfonated Polyethylene

3

Chlorinated Polyethylene

2

Urethane

1

Polyacrylate

3

Polysulfide

1

Silicone

4

Ethylene acrylic elastomers

---

Fluorosilicone

3

Tetrafluoroethylene/Propylene

---

Fluoroelastomer - Dipolymer

4

Fluoroelastomer - Terpolymer

4

Perfluoroelastomer

1