568-229 HSN90 DURO ORINGS

APG stocks the HSN90229, an AS568-229 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring with an inside diameter of 2.359 in (59.92 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 2.637 in (66.98 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

HNBR (Hydrogenated Nitrile) is known for improved ozone and weathering resistance over standard nitrile, excellent abrasion and tear strength. It resists petroleum oils and fuels, ozone and weathering, and modern refrigerants. 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 chlorinated hydrocarbons or ketones.

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

Reference part number HSN90229 when ordering; the item is sold individually. Unit weight is approximately 2.5225 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.