Elastomer

Rating

Natural Rubber, Isoprene

4

Butadiene Styrene, Butadiene

4

Butyl

4

Ethylene Propylene

4

Nitrile

1

HNBR

1

Epichlorohydrin

1

Polychloroprene

3

Chlorosulfonated Polyethylene

3

Chlorinated Polyethylene

---

Urethane

3

Polyacrylate

1

Polysulfide

1

Silicone

4

Ethylene acrylic elastomers

1

Fluorosilicone

1

Tetrafluoroethylene/Propylene

2

Fluoroelastomer - Dipolymer

1

Fluoroelastomer - Terpolymer

1

Perfluoroelastomer

1