HSN (HNBR) 80 568-313

Ordered as HSN80313, this is an AS568-313 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring supplied with an inside diameter of 0.662 in (16.81 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.082 in (27.48 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, long service life in refrigerant and oilfield duty. It resists sour gas and amine inhibitors, petroleum oils and fuels, and modern refrigerants. Continuous operating temperature is published at -40°F (-40°C) to 325°F (162.8°C). It is not the right choice where esters or strong oxidizing acids are present.

You will find this material specified across oilfield and downhole equipment, automotive air conditioning, and commercial refrigeration.

Reference part number HSN80313 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.