568-249 BLACK HNBR HSN70 O-Ring

Part number HSN70249 is an AS568-249 black HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring with an inside diameter of 4.859 in (123.42 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.137 in (130.48 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

HNBR (Hydrogenated Nitrile) is specified here for excellent abrasion and tear strength, oil resistance of nitrile with substantially better heat capability. The compound resists sour gas and amine inhibitors, modern refrigerants, and ozone and weathering. Published continuous service range is -40°F (-40°C) to 325°F (162.8°C).

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

Order part number HSN70249, sold individually. Unit weight is approximately 4.6613 g and nominal inside diameter is listed as 4 7/8 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.