ECO
Epichlorohydrin (CO, ECO, GECO)
Hydrin® is the trade name of epichlorohydrin elastomers made by Zeon Chemicals. epichlorohydrin elastomers are available as a homopolymer(CO), copolymer(ECO,GCO),and terpolmer(GECO). All epichlorohydrin rubbers offer low temperature flexibilities; resistance to oils, fuel and common solvents; higher temperature resistance than NBR; good weather ability and good dynamic properties.
Cure system
Sulfur-Cured vs. Peroxide-Cured
ECO are usually Peroxide-cured for standard compounds of GMORS. It also can be Sulfur-cured to improve flexible property in dynamic system but will reduce the heat resistance and cause poorer compression set.
Other Common Variations
- The typical applications of epichlorohydrin are fuels or LPG system in automotive.
Hydrin® is a registered trademark of Zeon Chemicals L.P.
General Information
ASTM D 1418 Designation
CO, ECO, GECO
Standard Color(s)
Black
ISO/DIN 1629 Designation
CO, ECO, GECO
Hardness Range
50-80 Shore A
ASTM D2000 / SAE J 200 Codes
CH
Relative Cost
Medium
Service Temperatures
Standard Low Temperature
-40°C / -40°F
Special Compound Low Temperature
Standard High Temperature
100°C / 212°F
Special Compound High Temperature
135°C / 275°F
Performs Well In...
- Mineral oil and grease
- LPG, fuels
- Silicone oil and grease
- Ozone, weather
Doesn’t Perform Well In...
- Ketones and esters
- Aromatic and chlorinated hydrocarbon
- Brake fluids
- Aldehydes