Part number E5.7X249.3 is a black EPDM (EPR) 70 Shore A O-Ring with an inside diameter of 249.3 mm (9.815 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 260.7 mm (10.26 in). An o-ring delivers dependable bidirectional sealing in a compact groove envelope. Source specification: Metric O-RING, JIS G250.
Expect good resistance to brake fluid, phosphate ester hydraulic fluids, and ozone, UV and weathering. That behavior comes from the compound itself: EPDM (EPR) is valued for good electrical insulating characteristics, outstanding weather, ozone and sunlight resistance. 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, outdoor equipment, and potable water applications.
Order part number E5.7X249.3, sold individually. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Description 5.7MM CS X 249.3MM ID BLACK EPDM 70D
Actual Outside Diameter 260.7 mm (10.26 inch)
Actual Cross Section 5.7 mm (0.224 inch)
Actual Inside Diameter 249.3 mm (9.815 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity