Elastomer

Rating

Natural Rubber, Isoprene

4

Butadiene Styrene, Butadiene

4

Butyl

4

Ethylene Propylene

4

Nitrile

3

HNBR

4

Epichlorohydrin

4

Polychloroprene

4

Chlorosulfonated Polyethylene

4

Chlorinated Polyethylene

---

Urethane

---

Polyacrylate

3

Polysulfide

3

Silicone

4

Ethylene acrylic elastomers

---

Fluorosilicone

1

Tetrafluoroethylene/Propylene

1

Fluoroelastomer - Dipolymer

1

Fluoroelastomer - Terpolymer

1

Perfluoroelastomer

1