Ordered as E70263, this is an AS568-263 black EPDM (EPR) 70 Shore A O-Ring with an inside diameter of 7.234 in (183.74 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 7.512 in (190.8 mm). The o-ring compresses into its gland to block fluid or gas migration across a joint.
The material holds up against ketones, water and steam, and phosphate ester hydraulic fluids. That behavior comes from the compound itself: EPDM (EPR) offers strong performance in outdoor and exposed installations, outstanding weather, ozone and sunlight resistance. The material carries a published service range of -65°F (-53.9°C) to 300°F (148.9°C). It should not be specified for service in petroleum oils and fuels or aromatic hydrocarbons.
Maintenance and OEM teams specify it across brake and phosphate ester systems, HVAC and refrigeration, and potable water applications.
Stocked as E70263 and sold individually. Unit weight is approximately 6.746 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.
Description -263 BLACK EPDM 70D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 7.234 inch (183.74 mm)
Actual Outside Diameter 7.512 inch (190.8 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity