568-359 HSN90 DURO ORINGS

APG stocks the HSN90359, an AS568-359 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring with an inside diameter of 5.725 in (145.42 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 6.145 in (156.08 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

It resists ozone and weathering, heat and oxidation, and modern refrigerants. HNBR (Hydrogenated Nitrile) is known for strong resistance to rapid gas decompression, long service life in refrigerant and oilfield duty. Rated temperature range runs from -40°F (-40°C) to 325°F (162.8°C) in continuous service. Exposure to strong oxidizing acids or chlorinated hydrocarbons will shorten service life.

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

Order part number HSN90359, sold individually. Nominal inside diameter is listed as 5 3/4 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.