Elastomer

Rating

Natural Rubber, Isoprene

4

Butadiene Styrene, Butadiene

4

Butyl

2

Ethylene Propylene

1

Nitrile

4

HNBR

4

Epichlorohydrin

---

Polychloroprene

3

Chlorosulfonated Polyethylene

3

Chlorinated Polyethylene

4

Urethane

4

Polyacrylate

4

Polysulfide

4

Silicone

4

Ethylene acrylic elastomers

4

Fluorosilicone

4

Tetrafluoroethylene/Propylene

---

Fluoroelastomer - Dipolymer

4

Fluoroelastomer - Terpolymer

3

Perfluoroelastomer

1