Elastomer

Rating

Natural Rubber, Isoprene

3

Butadiene Styrene, Butadiene

3

Butyl

3

Ethylene Propylene

2

Nitrile

3

HNBR

---

Epichlorohydrin

---

Polychloroprene

3

Chlorosulfonated Polyethylene

4

Chlorinated Polyethylene

4

Urethane

4

Polyacrylate

4

Polysulfide

4

Silicone

4

Ethylene acrylic elastomers

---

Fluorosilicone

4

Tetrafluoroethylene/Propylene

---

Fluoroelastomer - Dipolymer

4

Fluoroelastomer - Terpolymer

4

Perfluoroelastomer

1