-443 BLACK EPDM 70D O-RING

Part number E70443 is an AS568-443 black EPDM (EPR) 70 Shore A O-Ring measuring an inside diameter of 7.475 in (189.87 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 8.025 in (203.84 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The compound resists phosphate ester hydraulic fluids, brake fluid, and water and steam. That behavior comes from the compound itself: EPDM (EPR) offers very good flexibility at low temperature, strong performance in outdoor and exposed installations. The material carries a published service range of -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.

Typical settings include HVAC and refrigeration, potable water applications, and brake and phosphate ester systems.

This item is sold individually under part number E70443. Unit weight is approximately 0.0259 g and nominal inside diameter is listed as 7 1/2 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. For a size or compound outside the standard catalog, APG can quote from a print or sample.