Elastomer

Rating

Natural Rubber, Isoprene

2

Butadiene Styrene, Butadiene

2

Butyl

1

Ethylene Propylene

1

Nitrile

1

HNBR

---

Epichlorohydrin

1

Polychloroprene

1

Chlorosulfonated Polyethylene

2

Chlorinated Polyethylene

1

Urethane

---

Polyacrylate

---

Polysulfide

2

Silicone

---

Ethylene acrylic elastomers

---

Fluorosilicone

1

Tetrafluoroethylene/Propylene

---

Fluoroelastomer - Dipolymer

1

Fluoroelastomer - Terpolymer

1

Perfluoroelastomer

1