-391 BLACK EPDM 70D O-RING

Ordered as E70391, this is an AS568-391 black EPDM (EPR) 70 Shore A O-Ring with an inside diameter of 21.953 in (557.61 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 22.373 in (568.27 mm). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

EPDM (EPR) is widely chosen for excellent hot water and steam resistance, strong performance in outdoor and exposed installations. The material holds up against water and steam, ozone, UV and weathering, and dilute acids and alkalis. Service temperature is rated from -65°F (-53.9°C) through 300°F (148.9°C). Verify compatibility before use with petroleum oils and fuels or mineral oil-based lubricants.

Maintenance and OEM teams specify it across water and steam systems, HVAC and refrigeration, and potable water applications.

Stocked as E70391 and sold individually. Unit weight is approximately 45.032 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.