568-471 HSN90 DURO ORINGS

APG stocks the HSN90471, an AS568-471 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring measuring an inside diameter of 21.955 in (557.66 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 22.505 in (571.63 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.

As a material, HNBR (Hydrogenated Nitrile) is widely chosen for long service life in refrigerant and oilfield duty, excellent abrasion and tear strength. It resists petroleum oils and fuels, ozone and weathering, and heat and oxidation. The material carries a published service range of -40°F (-40°C) to 325°F (162.8°C). Verify compatibility before use with chlorinated hydrocarbons or strong oxidizing acids.

Common environments for this compound include engine timing systems, heavy-duty powertrain, and automotive air conditioning.

This item is sold individually under part number HSN90471. Application requirements vary, so validate compatibility with your process conditions prior to installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.