-201 BLACK EPDM 70D O-RING

Ordered as E70201, this is an AS568-201 black EPDM (EPR) 70 Shore A O-Ring supplied with an inside diameter of 0.171 in (4.34 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 0.449 in (11.4 mm). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

It resists dilute acids and alkalis, brake fluid, and phosphate ester hydraulic fluids. That behavior comes from the compound itself: EPDM (EPR) is widely chosen for outstanding weather, ozone and sunlight resistance, good electrical insulating characteristics. Published continuous service range is -65°F (-53.9°C) to 300°F (148.9°C). Applications involving mineral oil-based lubricants or aromatic hydrocarbons call for a different compound.

You will find this material specified across solar and roofing assemblies, water and steam systems, and potable water applications.

Reference part number E70201 when ordering; the item is sold individually. Unit weight is approximately 0.2836 g and nominal inside diameter is listed as 3/16 inch. 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.