HSN (HNBR) 80 568-411

APG stocks the HSN80411, an AS568-411 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring measuring an inside diameter of 2.725 in (69.22 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 3.275 in (83.19 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

HNBR (Hydrogenated Nitrile) is specified here for long service life in refrigerant and oilfield duty, strong resistance to rapid gas decompression. The material holds up against ozone and weathering, sour gas and amine inhibitors, and modern refrigerants. The material carries a published service range of -40°F (-40°C) to 325°F (162.8°C). Verify compatibility before use with esters or strong oxidizing acids.

Maintenance and OEM teams specify it across commercial refrigeration, oilfield and downhole equipment, and heavy-duty powertrain.

This item is sold individually under part number HSN80411. 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.