-328 BLACK EPDM 70D O-RING

Part number E70328 is an AS568-328 black EPDM (EPR) 70 Shore A O-Ring built to an inside diameter of 1.85 in (46.99 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 2.27 in (57.66 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

As a material, EPDM (EPR) is valued for very good flexibility at low temperature and good electrical insulating characteristics. This material stands up to phosphate ester hydraulic fluids, water and steam, and ozone, UV and weathering. Published continuous service range is -65°F (-53.9°C) to 300°F (148.9°C). Applications involving aromatic hydrocarbons or mineral oil-based lubricants call for a different compound.

Maintenance and OEM teams specify it across HVAC and refrigeration, solar and roofing assemblies, and outdoor equipment.

Order part number E70328, sold individually. Unit weight is approximately 4.2 g and nominal inside diameter is listed as 1 7/8 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. 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.