E5.7X499.3 is a black EPDM (EPR) 70 Shore A O-Ring with an inside diameter of 499.3 mm (19.657 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 510.7 mm (20.11 in). In service, this o-ring remains the most cost-effective sealing element available for pressurized assemblies. The catalog record notes: Metric O-RING, JIS G500.
The material holds up against water and steam, phosphate ester hydraulic fluids, and ketones. That behavior comes from the compound itself: EPDM (EPR) offers good electrical insulating characteristics and very good flexibility at low temperature. Continuous operating temperature is published at -65°F (-53.9°C) to 300°F (148.9°C).
It sees regular use in solar and roofing assemblies, HVAC and refrigeration, and brake and phosphate ester systems.
E5.7X499.3 ships individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.
Description 5.7MM CS X 499.3MM ID BLACK EPDM 70D
Actual Outside Diameter 510.7 mm (20.11 inch)
Actual Cross Section 5.7 mm (0.224 inch)
Actual Inside Diameter 499.3 mm (19.657 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity