APG stocks the E2.5X26, a black EPDM (EPR) 70 Shore A O-Ring with an inside diameter of 26 mm (1.024 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 31 mm (1.22 in). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
This material stands up to ketones, dilute acids and alkalis, and ozone, UV and weathering. That behavior comes from the compound itself: EPDM (EPR) is valued for good electrical insulating characteristics, strong performance in outdoor and exposed installations. The material carries a published service range of -65°F (-53.9°C) to 300°F (148.9°C). It is not the right choice where mineral oil-based lubricants or petroleum oils and fuels are present.
It sees regular use in HVAC and refrigeration, outdoor equipment, and brake and phosphate ester systems.
Stocked as E2.5X26 and sold individually. Unit weight is approximately 0.575 g. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Description 2.5MM CS X 26MM ID BLACK EPDM 70D
Actual Outside Diameter 31 mm (1.22 inch)
Actual Cross Section 2.5 mm (0.098 inch)
Actual Inside Diameter 26 mm (1.024 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity