EPDM Parker EJ273-70 O-Ring, Size: -020
Material: EPDM Parker EJ273-70 O-Ring
Size: AS568 -020 O-Ring
Part Number: EJ273-70-OR-020
Parker Seal® (Parker)
EJ273-70
EPDM (EPR, EPM)
70
Shore A
Chloramine Resistant
General Purpose Material
Color: Black
Detailed Description
EJ273-70-OR-020 is a Black, 70 Shore A, EPDM (EPR, EPM) O-Ring made from Parker Seal® (Parker). Parker Seal® (Parker) EJ273-70 is manufactured with the following features & specifications: Chloramine Resistant, General Purpose Material. EJ273-70-OR-020 is AS568 size -020 O-Ring also referred to as 1.78mm (Cross Sectional Diameter (CS)) x 21.95mm (Inside Diameter (ID)).
Material: EPDM Parker EJ273-70 O-Ring
Size: AS568 -020, 1.78mm CS X 21.95mm ID (0.070" CS X 0.864" ID)
| Technical Specification | Value |
|---|---|
| Compound Number | EJ273-70 |
| Brand | Parker Seal® (Parker) |
| Material | EPDM (EPR, EPM) |
| Color | Black |
| Durometer | 70 Shore A |
| High Temperature | 121 °C / 250 °F |
| Low Temperature | -57 °C / -71 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | O-Ring |
| Size Standard | AS568 |
| Size | -020 |
| Cross Section (CS) | 1.78 mm / 0.070 in |
| Inside Diameter (ID) | 21.95 mm / 0.864 in |
| Other Specifications | |
Chloramine Resistant | |
Parker’s EJ273-70 is a 70 Shore A black EPDM compound engineered for superior resistance to chloramine and other disinfectants commonly used in potable water systems. Designed to meet ASTM D2000 M4CA710 specifications, it provides excellent sealing performance in both hot and cold water applications with a service temperature range of -70°F to 250°F. The compound offers outstanding resistance to water, steam, ozone, and weathering, along with reliable performance in chloramine-treated environments where standard EPDM materials often degrade. Its stable formulation ensures long-term elasticity, low compression set, and consistent sealing integrity.
EJ273-70 is well-suited for use in plumbing, municipal water systems, and other applications requiring compatibility with drinking water and disinfection chemicals. It provides excellent aging resistance and mechanical durability under repeated pressure and temperature cycling. Canyon Components offers equivalent EPDM materials that match or exceed the performance of Parker EJ273-70 for potable water, chloramine-resistant, and steam sealing applications.