1.78MM CS X 8.73MM ID BLACK EPDM 70D

The E1.78X8.73 is a black EPDM (EPR) 70 Shore A O-Ring with an inside diameter of 8.73 mm (0.344 in), a cross section of 1.78 mm (0.07 in), and an outside diameter of 12.29 mm (0.48 in). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The material holds up against brake fluid, phosphate ester hydraulic fluids, and dilute acids and alkalis. EPDM (EPR) is widely chosen for outstanding weather, ozone and sunlight resistance, strong performance in outdoor and exposed installations. Rated temperature range runs from -65°F (-53.9°C) to 300°F (148.9°C) in continuous service. Verify compatibility before use with petroleum oils and fuels or mineral oil-based lubricants.

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

Reference part number E1.78X8.73 when ordering; the item is sold individually. Check the compound against your process media, pressure and temperature before committing to a design. 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.