HSN (HNBR) 80 568-424

Part number HSN80424 is an AS568-424 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring measuring an inside diameter of 4.35 in (110.49 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 4.9 in (124.46 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.

It resists petroleum oils and fuels, modern refrigerants, and heat and oxidation. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) is valued for improved ozone and weathering resistance over standard nitrile, long service life in refrigerant and oilfield duty. Service temperature is rated from -40°F (-40°C) through 325°F (162.8°C).

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

HSN80424 ships 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.