This o-ring is supplied in AS568-238 black EPDM (EPR) 80 Shore A with an inside diameter of 3.484 in (88.49 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 3.762 in (95.55 mm), catalogued under part number E80PC238. It provides a reliable static or dynamic seal by deforming into its gland under assembly load.
As a material, EPDM (EPR) is known for very good flexibility at low temperature, outstanding weather, ozone and sunlight resistance. The compound resists phosphate ester hydraulic fluids, ketones, and dilute acids and alkalis. Published continuous service range is -65°F (-53.9°C) to 300°F (148.9°C). It should not be specified for service in aromatic hydrocarbons or mineral oil-based lubricants.
Common environments for this compound include outdoor equipment, solar and roofing assemblies, and potable water applications.
Order part number E80PC238, sold individually. Nominal inside diameter is listed as 3 1/2 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
Description -238 BLACK EPDM 80D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 3.484 inch (88.49 mm)
Actual Outside Diameter 3.762 inch (95.55 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity