568-213 HSN90 DURO ORINGS

Part number HSN90213 is an AS568-213 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring measuring an inside diameter of 0.921 in (23.39 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 1.199 in (30.45 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

The material holds up against sour gas and amine inhibitors, petroleum oils and fuels, and ozone and weathering. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) is specified for strong resistance to rapid gas decompression, excellent abrasion and tear strength. Continuous operating temperature is published at -40°F (-40°C) to 325°F (162.8°C). It is not the right choice where chlorinated hydrocarbons or esters are present.

Maintenance and OEM teams specify it across heavy-duty powertrain, oilfield and downhole equipment, and automotive air conditioning.

HSN90213 ships individually. As always, verify media compatibility and operating conditions against the requirements of your specific application. 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.