Elastomer

Rating

Natural Rubber, Isoprene

4

Butadiene Styrene, Butadiene

4

Butyl

4

Ethylene Propylene

3

Nitrile

4

HNBR

4

Epichlorohydrin

---

Polychloroprene

4

Chlorosulfonated Polyethylene

2

Chlorinated Polyethylene

2

Urethane

4

Polyacrylate

4

Polysulfide

4

Silicone

4

Ethylene acrylic elastomers

---

Fluorosilicone

3

Tetrafluoroethylene/Propylene

---

Fluoroelastomer - Dipolymer

2

Fluoroelastomer - Terpolymer

1

Perfluoroelastomer

1