This o-ring is supplied in AS568-250 black EPDM (EPR) 80 Shore A with an inside diameter of 4.984 in (126.59 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.262 in (133.65 mm), catalogued under part number E80PC250. It provides a reliable static or dynamic seal by deforming into its gland under assembly load.
The compound resists phosphate ester hydraulic fluids, dilute acids and alkalis, and ketones. That behavior comes from the compound itself: EPDM (EPR) is specified for excellent hot water and steam resistance, very good flexibility at low temperature. Service temperature is rated from -65°F (-53.9°C) through 300°F (148.9°C). It should not be specified for service in petroleum oils and fuels or aromatic hydrocarbons.
It sees regular use in HVAC and refrigeration, potable water applications, and outdoor equipment.
This item is sold individually under part number E80PC250. Nominal inside diameter is listed as 5 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Description -250 BLACK EPDM 80D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 4.984 inch (126.59 mm)
Actual Outside Diameter 5.262 inch (133.65 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity