Elastomer

Rating

Natural Rubber, Isoprene

1

Butadiene Styrene, Butadiene

1

Butyl

1

Ethylene Propylene

1

Nitrile

4

HNBR

---

Epichlorohydrin

4

Polychloroprene

3

Chlorosulfonated Polyethylene

4

Chlorinated Polyethylene

1

Urethane

1

Polyacrylate

4

Polysulfide

1

Silicone

4

Ethylene acrylic elastomers

---

Fluorosilicone

2

Tetrafluoroethylene/Propylene

---

Fluoroelastomer - Dipolymer

1

Fluoroelastomer - Terpolymer

1

Perfluoroelastomer

1