Elastomer

Rating

Natural Rubber, Isoprene

4

Butadiene Styrene, Butadiene

4

Butyl

3

Ethylene Propylene

2

Nitrile

1

HNBR

1

Epichlorohydrin

1

Polychloroprene

2

Chlorosulfonated Polyethylene

2

Chlorinated Polyethylene

---

Urethane

1

Polyacrylate

1

Polysulfide

1

Silicone

1

Ethylene acrylic elastomers

1

Fluorosilicone

1

Tetrafluoroethylene/Propylene

1

Fluoroelastomer - Dipolymer

1

Fluoroelastomer - Terpolymer

1

Perfluoroelastomer

1