Part number E2.5X78 is a black EPDM (EPR) 70 Shore A O-Ring built to an inside diameter of 78 mm (3.071 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 83 mm (3.27 in). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.
EPDM (EPR) is specified here for outstanding weather, ozone and sunlight resistance, excellent hot water and steam resistance. The compound resists brake fluid, ketones, and dilute acids and alkalis. Continuous operating temperature is published at -65°F (-53.9°C) to 300°F (148.9°C). It is not the right choice where aromatic hydrocarbons or petroleum oils and fuels are present.
It sees regular use in outdoor equipment, water and steam systems, and brake and phosphate ester systems.
This item is sold individually under part number E2.5X78. Unit weight is approximately 1.51 g. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Description 2.5MM CS X 78MM ID BLACK EPDM 70D
Actual Outside Diameter 83 mm (3.27 inch)
Actual Cross Section 2.5 mm (0.098 inch)
Actual Inside Diameter 78 mm (3.071 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity