568-250 HSN90 DURO ORINGS

APG stocks the HSN90250, an AS568-250 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring built to an inside diameter of 4.984 in (126.59 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.262 in (133.65 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.

As a material, HNBR (Hydrogenated Nitrile) delivers long service life in refrigerant and oilfield duty, strong resistance to rapid gas decompression. This material stands up to heat and oxidation, modern refrigerants, and sour gas and amine inhibitors. Service temperature is rated from -40°F (-40°C) through 325°F (162.8°C).

Common environments for this compound include commercial refrigeration, engine timing systems, and automotive air conditioning.

Reference part number HSN90250 when ordering; the item is sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.