4MM CS X 23MM ID BLACK EPDM 70D

Part number E4X23 is a black EPDM (EPR) 70 Shore A O-Ring measuring an inside diameter of 23 mm (0.906 in), a cross section of 4 mm (0.157 in), and an outside diameter of 31 mm (1.22 in). An 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, phosphate ester hydraulic fluids, and brake fluid. That behavior comes from the compound itself: EPDM (EPR) is widely chosen for strong performance in outdoor and exposed installations, very good flexibility at low temperature. Rated temperature range runs from -65°F (-53.9°C) to 300°F (148.9°C) in continuous service. Applications involving petroleum oils and fuels or mineral oil-based lubricants call for a different compound.

You will find this material specified across brake and phosphate ester systems, outdoor equipment, and HVAC and refrigeration.

Stocked as E4X23 and sold individually. Unit weight is approximately 1.3861 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. For a size or compound outside the standard catalog, APG can quote from a print or sample.