Elastomer

Rating

Natural Rubber, Isoprene

4

Butadiene Styrene, Butadiene

4

Butyl

4

Ethylene Propylene

4

Nitrile

1

HNBR

1

Epichlorohydrin

---

Polychloroprene

3

Chlorosulfonated Polyethylene

4

Chlorinated Polyethylene

3

Urethane

1

Polyacrylate

1

Polysulfide

1

Silicone

4

Ethylene acrylic elastomers

4

Fluorosilicone

2

Tetrafluoroethylene/Propylene

2

Fluoroelastomer - Dipolymer

1

Fluoroelastomer - Terpolymer

1

Perfluoroelastomer

1