568-263 HSN90 DURO ORINGS

Part number HSN90263 is an AS568-263 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring with an inside diameter of 7.234 in (183.74 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 7.512 in (190.8 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

This material stands up to ozone and weathering, heat and oxidation, and petroleum oils and fuels. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) is known for excellent abrasion and tear strength, the oil resistance of nitrile with substantially better heat capability. Rated temperature range runs from -40°F (-40°C) to 325°F (162.8°C) in continuous service.

Maintenance and OEM teams specify it across oilfield and downhole equipment, heavy-duty powertrain, and commercial refrigeration.

Order part number HSN90263, sold individually. Nominal inside diameter is listed as 7 1/4 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.