568-428 GREEN HNBR (HSN) 70 ORINGS

Ordered as HS70428, this is an AS568-428 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring with an inside diameter of 4.85 in (123.19 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 5.4 in (137.16 mm). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

HNBR (Hydrogenated Nitrile) is specified here for improved ozone and weathering resistance over standard nitrile, excellent abrasion and tear strength. The material holds up against ozone and weathering, petroleum oils and fuels, and sour gas and amine inhibitors. Published continuous service range is -40°F (-40°C) to 325°F (162.8°C). Applications involving ketones or esters call for a different compound.

You will find this material specified across commercial refrigeration, heavy-duty powertrain, and engine timing systems.

Order part number HS70428, sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. For a size or compound outside the standard catalog, APG can quote from a print or sample.