Ordered as E2.5X72, this is a black EPDM (EPR) 70 Shore A O-Ring measuring an inside diameter of 72 mm (2.835 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 77 mm (3.03 in). The o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
EPDM (EPR) is specified here for excellent hot water and steam resistance, good electrical insulating characteristics. It resists ketones, brake fluid, and water and steam. Service temperature is rated from -65°F (-53.9°C) through 300°F (148.9°C). Exposure to aromatic hydrocarbons or mineral oil-based lubricants will shorten service life.
It sees regular use in water and steam systems, outdoor equipment, and brake and phosphate ester systems.
Stocked as E2.5X72 and sold individually. Unit weight is approximately 1.31 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
Description 2.5MM CS X 72MM ID BLACK EPDM 70D
Actual Outside Diameter 77 mm (3.03 inch)
Actual Cross Section 2.5 mm (0.098 inch)
Actual Inside Diameter 72 mm (2.835 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity