Elastomer

Rating

Natural Rubber, Isoprene

4

Butadiene Styrene, Butadiene

4

Butyl

2

Ethylene Propylene

2

Nitrile

3

HNBR

3

Epichlorohydrin

---

Polychloroprene

3

Chlorosulfonated Polyethylene

2

Chlorinated Polyethylene

1

Urethane

4

Polyacrylate

4

Polysulfide

---

Silicone

4

Ethylene acrylic elastomers

4

Fluorosilicone

4

Tetrafluoroethylene/Propylene

1

Fluoroelastomer - Dipolymer

4

Fluoroelastomer - Terpolymer

4

Perfluoroelastomer

1