The E2.5X21 is a black EPDM (EPR) 70 Shore A O-Ring supplied with an inside diameter of 21 mm (0.827 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 26 mm (1.02 in). This o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
This material stands up to water and steam, brake fluid, and ozone, UV and weathering. That behavior comes from the compound itself: EPDM (EPR) offers excellent hot water and steam resistance, very good flexibility at low temperature. Published continuous service range is -65°F (-53.9°C) to 300°F (148.9°C). Applications involving aromatic hydrocarbons or mineral oil-based lubricants call for a different compound.
Typical settings include outdoor equipment, solar and roofing assemblies, and potable water applications.
Reference part number E2.5X21 when ordering; the item is sold individually. Unit weight is approximately 0.455 g. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Description 2.5MM CS X 21MM ID BLACK EPDM 70D
Actual Outside Diameter 26 mm (1.02 inch)
Actual Cross Section 2.5 mm (0.098 inch)
Actual Inside Diameter 21 mm (0.827 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity