Image shown is representative and may differ from the actual product in size, proportions, and color shade
0.157 in
(4.00 mm)
0.276 in
(7.00 mm)
EPDM Parker EJ273-70 O-Ring, Size: 4X7
Material: EPDM Parker EJ273-70 O-Ring
Size: Metric 4X7 O-Ring
Part Number: EJ273-70-OR-4X7
Color: Black
Detailed Description
EJ273-70-OR-4X7 is a Black, 70 Shore A, EPDM (EPR, EPM) O-Ring made from Parker Seal® (Parker). It is a 70 durometer EPDM (EPR, EPM). Parker Seal® (Parker) EJ273-70 is manufactured with the following features & specifications: Chloramine Resistant, General Purpose Material. EJ273-70-OR-4X7 is Metric size 4X7 O-Ring also referred to as 4mm (Cross Sectional Diameter (CS)) x 7mm (Inside Diameter (ID)). Material: 70 Durometer EPDM Parker EJ273-70 O-Ring Size: Metric 4X7, 4mm CS X 7mm ID (0.157" CS X 0.276" ID)
| Technical Specification | Value |
|---|---|
| Compound Number | EJ273-70 |
| Brand | Parker Seal® (Parker) |
| Material | EPDM (EPR, EPM) |
| Color | Black |
| Durometer | 70 Shore A Hardness |
| High Temperature | 121 °C / 250 °F |
| Low Temperature | -57 °C / -71 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | O-Ring |
| Size Standard | Metric |
| Size | 4X7 |
| Cross Section (CS) | 4.00 mm / 0.157 in |
| Inside Diameter (ID) | 7.00 mm / 0.276 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 delivers reliable sealing performance in both hot and cold water applications across a service temperature range of -70°F to 250°F. The compound provides excellent resistance to water, steam, ozone, and weathering, along with consistent performance in chloramine-treated environments where standard EPDM materials can degrade. Its stable formulation supports long-term elasticity, low compression set, and dependable sealing integrity over extended service life.
EJ273-70 is well suited for plumbing components, municipal water systems, and other applications requiring compatibility with drinking water and disinfection chemicals. It offers strong aging resistance and mechanical durability under repeated pressure and temperature cycling. Canyon Components offers equivalent EPDM materials designed to meet similar performance requirements for potable water, chloramine-resistant, and steam sealing applications.
Common relevant keywords:
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