568-225 BLACK HNBR HSN70 ORINGS

HSN70225 is an AS568-225 black HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring with an inside diameter of 1.859 in (47.22 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 2.137 in (54.28 mm). In service, this o-ring compresses into its gland to block fluid or gas migration across a joint.

As a material, HNBR (Hydrogenated Nitrile) offers strong resistance to rapid gas decompression, excellent abrasion and tear strength. This material stands up to sour gas and amine inhibitors, modern refrigerants, and petroleum oils and fuels. Rated temperature range runs from -40°F (-40°C) to 325°F (162.8°C) in continuous service. Applications involving strong oxidizing acids or esters call for a different compound.

Typical settings include engine timing systems, heavy-duty powertrain, and commercial refrigeration.

Reference part number HSN70225 when ordering; the item is sold individually. Unit weight is approximately 1.8281 g and nominal inside diameter is listed as 1 7/8 inch. Review your operating media and conditions against this specification before installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.