- Trade Name
-
- Hydrin — Zeon
- ASTM D1418 Designation
- CO, ECO
- ASTM D2000/SAE J2000 TYPE, CLASS
- CH
- Apple Compound Designation
- EH
- Standard Color
- Black
- Description
- Available in homopolymer (CO), copolymer (ECO), and terpolymer (GECO) formats, Epichlorohydrins are oil resistant compounds.
- Key Uses
- Ideal for fuel and air conditioning system components. Used in the petroleum industry where a higher temperature capability than NBR is required.
- Temperature Range
- Standard Compound: -40°F to 275°F
- Hardness (Shore A)
- 50 to 90
- Features
- Epichlorohydrin features excellent resistance to hydrocarbon oils and fuels; low solvent and gas permeability; excellent resistance to ozone and weathering; and stable cycling from low to high temperature. Good replacement to butyl when gas permeability and oil resistance are needed.
- Limitations
- Compression set is only “fair” at elevated temperatures (250°F to 275°F). Epichlorohydrin is attacked by ketones; esters; aldehydes; chlorinated and nitro hydrocarbons; and is not recommended for exposure to brake fluids.