568-224 BLACK HNBR HSN70 O-Ring

Part number HSN70224 is an AS568-224 black HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring measuring an inside diameter of 1.734 in (44.04 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 2.012 in (51.1 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The material holds up against modern refrigerants, heat and oxidation, and sour gas and amine inhibitors. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) is specified for strong resistance to rapid gas decompression, improved ozone and weathering resistance over standard nitrile. Published continuous service range is -40°F (-40°C) to 325°F (162.8°C). Exposure to ketones or strong oxidizing acids will shorten service life.

You will find this material specified across automotive air conditioning, oilfield and downhole equipment, and heavy-duty powertrain.

Reference part number HSN70224 when ordering; the item is sold individually. Unit weight is approximately 0.0018 g. 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.