The E80PC390 is an AS568-390 black EPDM (EPR) 80 Shore A O-Ring measuring an inside diameter of 20.953 in (532.21 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 21.373 in (542.87 mm). This o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.
The compound resists brake fluid, dilute acids and alkalis, and water and steam. EPDM (EPR) offers strong performance in outdoor and exposed installations, outstanding weather, ozone and sunlight resistance. Published continuous service range is -65°F (-53.9°C) to 300°F (148.9°C). It is not the right choice where mineral oil-based lubricants or aromatic hydrocarbons are present.
It sees regular use in water and steam systems, brake and phosphate ester systems, and outdoor equipment.
This item is sold individually under part number E80PC390. Check the compound against your process media, pressure and temperature before committing to a design.
Description -390 BLACK EPDM 80D O-RING
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 20.953 inch (532.21 mm)
Actual Outside Diameter 21.373 inch (542.87 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity