568-434 HSN90 DURO ORINGS

Part number HSN90434 is an AS568-434 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring with an inside diameter of 5.6 in (142.24 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 6.15 in (156.21 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

It resists ozone and weathering, heat and oxidation, and sour gas and amine inhibitors. HNBR (Hydrogenated Nitrile) delivers improved ozone and weathering resistance over standard nitrile, strong resistance to rapid gas decompression. Service temperature is rated from -40°F (-40°C) through 325°F (162.8°C). It is not the right choice where esters or strong oxidizing acids are present.

It sees regular use in commercial refrigeration, engine timing systems, and heavy-duty powertrain.

Reference part number HSN90434 when ordering; the item is sold individually. Check the compound against your process media, pressure and temperature before committing to a design.