568-243 GREEN HNBR (HSN) 70 ORINGS

Part number HS70243 is an AS568-243 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring measuring an inside diameter of 4.109 in (104.37 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.387 in (111.43 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

Expect good resistance to petroleum oils and fuels, sour gas and amine inhibitors, and modern refrigerants. HNBR (Hydrogenated Nitrile) is known for long service life in refrigerant and oilfield duty, improved ozone and weathering resistance over standard nitrile. Service temperature is rated from -40°F (-40°C) through 325°F (162.8°C). It should not be specified for service in ketones or esters.

Common environments for this compound include heavy-duty powertrain, commercial refrigeration, and engine timing systems.

Reference part number HS70243 when ordering; the item is sold individually. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.