Elastomer

Rating

Natural Rubber, Isoprene

2

Butadiene Styrene, Butadiene

3

Butyl

1

Ethylene Propylene

1

Nitrile

1

HNBR

1

Epichlorohydrin

---

Polychloroprene

2

Chlorosulfonated Polyethylene

1

Chlorinated Polyethylene

---

Urethane

---

Polyacrylate

---

Polysulfide

1

Silicone

1

Ethylene acrylic elastomers

---

Fluorosilicone

2

Tetrafluoroethylene/Propylene

---

Fluoroelastomer - Dipolymer

2

Fluoroelastomer - Terpolymer

1

Perfluoroelastomer

1