3MM CS X 49.5MM ID BLACK EPDM 70D

Part number E3X49.5 is a black EPDM (EPR) 70 Shore A O-Ring measuring an inside diameter of 49.5 mm (1.949 in), a cross section of 3 mm (0.118 in), and an outside diameter of 55.5 mm (2.19 in). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

It resists phosphate ester hydraulic fluids, ketones, and dilute acids and alkalis. That behavior comes from the compound itself: EPDM (EPR) is known for excellent hot water and steam resistance, strong performance in outdoor and exposed installations. Service temperature is rated from -65°F (-53.9°C) through 300°F (148.9°C). Verify compatibility before use with mineral oil-based lubricants or petroleum oils and fuels.

You will find this material specified across solar and roofing assemblies, potable water applications, and outdoor equipment.

Reference part number E3X49.5 when ordering; the item is sold individually. As always, verify media compatibility and operating conditions against the requirements of your specific application.