-239 BLACK EPDM 70D O-RING

Part number E70239 is an AS568-239 black EPDM (EPR) 70 Shore A O-Ring measuring an inside diameter of 3.609 in (91.67 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 3.887 in (98.73 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The material holds up against ozone, UV and weathering, phosphate ester hydraulic fluids, and ketones. That behavior comes from the compound itself: EPDM (EPR) is known for good electrical insulating characteristics, excellent hot water and steam resistance. Continuous operating temperature is published at -65°F (-53.9°C) to 300°F (148.9°C). Verify compatibility before use with petroleum oils and fuels or aromatic hydrocarbons.

You will find this material specified across outdoor equipment, water and steam systems, and HVAC and refrigeration.

Reference part number E70239 when ordering; the item is sold individually. Unit weight is approximately 3.545 g and nominal inside diameter is listed as 3 5/8 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.