Elastomer

Rating

Natural Rubber, Isoprene

4

Butadiene Styrene, Butadiene

4

Butyl

4

Ethylene Propylene

4

Nitrile

1

HNBR

1

Epichlorohydrin

1

Polychloroprene

1

Chlorosulfonated Polyethylene

1

Chlorinated Polyethylene

---

Urethane

1

Polyacrylate

1

Polysulfide

1

Silicone

3

Ethylene acrylic elastomers

---

Fluorosilicone

1

Tetrafluoroethylene/Propylene

---

Fluoroelastomer - Dipolymer

1

Fluoroelastomer - Terpolymer

1

Perfluoroelastomer

1