568-344 HSN90 DURO ORINGS

Ordered as HSN90344, this is an AS568-344 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring built to an inside diameter of 3.85 in (97.79 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.27 in (108.46 mm). The o-ring compresses into its gland to block fluid or gas migration across a joint.

The material holds up against sour gas and amine inhibitors, petroleum oils and fuels, and ozone and weathering. HNBR (Hydrogenated Nitrile) is widely chosen for strong resistance to rapid gas decompression, improved ozone and weathering resistance over standard nitrile. Rated temperature range runs from -40°F (-40°C) to 325°F (162.8°C) in continuous service. Exposure to esters or ketones will shorten service life.

You will find this material specified across commercial refrigeration, oilfield and downhole equipment, and engine timing systems.

Reference part number HSN90344 when ordering; the item is sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation.