ECO O-Rings
ECO is a specialty elastomer used where fuel resistance, low gas permeability, and good ozone resistance need to be balanced together.
Typical temperature rangeAbout -40°C to +135°C typical.
Other namesECO, Epichlorohydrin
Hardness optionsHardness depends on the exact compound and service target.
Compliance optionsCompliance depends on the exact formulation and any application-specific declarations.
Best used for
- Fuel service
- Hydrocarbon oils
- Refrigerant-related exposure
- Low-permeation sealing
- Applications needing fuel resistance plus ozone resistance
Key advantages
- Good fuel resistance
- Low gas permeability
- Good ozone and weather resistance
Performs well in
- Fuel service
- Hydrocarbon oils
- Low-permeation applications
- Refrigerant-related exposure in suitable conditions
- Ozone and weather exposure
Use with caution or avoid
- Broad organic chemical exposure
- Applications requiring much broader chemical resistance than ECO can provide
Typical applications
- Automotive fuel systems
- Refrigerant-related service
- Low-permeation industrial sealing
Common industries
- Automotive fuel systems
- Industrial sealing
- Refrigeration-related service
- Low-permeation applications
When to choose ECO
Choose ECO when fuel resistance and low permeability are both important selection drivers.
When not to choose ECO: Avoid or review carefully when your application involves broad organic chemical exposure or where another elastomer provides a better overall service match.
Selection guide
This is a practical selection guide. Final material choice should always be checked against actual fluid, temperature, pressure, movement, environment, and any approval requirement for the exact compound.
Need help selecting the right material?
Tell us your fluid, temperature, pressure, size, and whether the seal is static or dynamic. We can help review the most suitable starting options before final size and compound selection.
