Elastomer

Rating

Natural Rubber, Isoprene

4

Butadiene Styrene, Butadiene

4

Butyl

3

Ethylene Propylene

3

Nitrile

4

HNBR

4

Epichlorohydrin

---

Polychloroprene

4

Chlorosulfonated Polyethylene

4

Chlorinated Polyethylene

---

Urethane

3

Polyacrylate

4

Polysulfide

2

Silicone

4

Ethylene acrylic elastomers

---

Fluorosilicone

4

Tetrafluoroethylene/Propylene

2

Fluoroelastomer - Dipolymer

4

Fluoroelastomer - Terpolymer

4

Perfluoroelastomer

1