HSN (HNBR) 80 568-346

Part number HSN80346 is an AS568-346 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring with an inside diameter of 4.1 in (104.14 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.52 in (114.81 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

As a material, HNBR (Hydrogenated Nitrile) is specified for long service life in refrigerant and oilfield duty, strong resistance to rapid gas decompression. The compound resists sour gas and amine inhibitors, modern refrigerants, and heat and oxidation. Rated temperature range runs from -40°F (-40°C) to 325°F (162.8°C) in continuous service. It should not be specified for service in ketones or esters.

Common environments for this compound include oilfield and downhole equipment, engine timing systems, and automotive air conditioning.

Reference part number HSN80346 when ordering; the item is sold individually. Unit weight is approximately 9.832 g and nominal inside diameter is listed as 4 1/8 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.