Elastomer

Rating

Natural Rubber, Isoprene

4

Butadiene Styrene, Butadiene

4

Butyl

3

Ethylene Propylene

2

Nitrile

4

HNBR

4

Epichlorohydrin

4

Polychloroprene

4

Chlorosulfonated Polyethylene

4

Chlorinated Polyethylene

4

Urethane

3

Polyacrylate

4

Polysulfide

2

Silicone

2

Ethylene acrylic elastomers

4

Fluorosilicone

3

Tetrafluoroethylene/Propylene

---

Fluoroelastomer - Dipolymer

3

Fluoroelastomer - Terpolymer

1

Perfluoroelastomer

1