*The EPDM o-ring compound attributes are used to outline the basic properties. EPDM o-ring attributes can be adjusted by modifying the basic compound.
*Due to the number of interacting forces, it is STRONGLY RECOMMENDED THAT YOUR ELASTOMER SELECTION BE RIGOROUSLY TESTED IN THE ACTUAL APPLICATION, performance assumptions must be checked so that you are certain that all variables have been carefully considered.
*The chemical compatibility and physical properties are listed as general characteristics of the EPDM o-ring compound. Speciality compounds can be derived to enhance or modify the performance to meet o-ring’s application needs.
| Chemical Description |
Ethylene propylene diene rubber |
| Abbreviations (ASTM 1418) |
EPDM |
| ISO / DIN |
EPDM |
| Other Trade Names |
EP, EPT, EPR |
| ASTM D2000 Designations |
BA, CA, DA |
| Low Temperature Range |
-60°F / -51°C |
| High Temperature Range |
300°F / 149°C |
EPDM
Physical Properties |
Very
Good |
Good |
Fair |
Poor |
| Abrasion Resistance |
|
2 |
|
|
| Acid Resistance |
|
2 |
|
|
| Chemical Resistance |
1 |
|
|
|
| Cold Resistance |
|
2 |
|
|
| Compression Set Resistance |
|
2 |
|
|
| Dynamic Properties |
|
2 |
|
|
| Electrical Properties |
|
2 |
|
|
| Elongation |
|
2 |
|
|
| Flame Resistance |
|
|
|
4 |
| Heat Resistance |
|
2 |
|
|
| Impermeability |
|
2 |
|
|
| Oil Resistance |
|
|
|
4 |
| Ozone Resistance |
1 |
|
|
|
| Tear Resistance |
|
2 |
|
|
| Tensile Strength |
|
2 |
|
|
| Water Steam Resistance |
1 |
|
|
|
| Weather Resistance |
1 |
|
|
|
O-ring Measurement Chart
EPDM Orings can be made in custom sizes to fit any application specific needs. Our engineering staff can review your application and design a solution that satisfies those requirements. You can find assistance with
oring gland design here. You can find assistance with
oring design here. To request a quote on your oring specifications please
submit a RFQ here.
All stocked
EPDM AS568 o-rings have three measurement types. First, a nominal inch reference, then actual inch sizes, and finally the metric size displayed in millimeters. EPDM o-rings are stocked and cataloged by their
AS568 number. This number references the Aerospace Standard 568 (AS 568) which was published by the SAE (Society of Automotive Engineers). Each o-ring is assigned a dash number which correlates directly to an exact o-ring size. You may view a complete chart of these o-ring sizes
here.EPDM O-rings are available in several metric sizes.
EPDM metric O-rings are cataloged by their cross section and inside diameter. Columbia references the
metric EPDM o-rings by the compound number and the cross section along with the inside diameter. You may view a complete chart of the metric o-ring sizes
here.
Speciality Elastomers