568-320 HSN90 DURO ORINGS

Ordered as HSN90320, this is an AS568-320 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring with an inside diameter of 1.1 in (27.94 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.52 in (38.61 mm). The o-ring remains the most cost-effective sealing element available for pressurized assemblies.

The material holds up against ozone and weathering, petroleum oils and fuels, and modern refrigerants. HNBR (Hydrogenated Nitrile) is specified for strong resistance to rapid gas decompression and the oil resistance of nitrile with substantially better heat capability. Rated temperature range runs from -40°F (-40°C) to 325°F (162.8°C) in continuous service. Applications involving ketones or strong oxidizing acids call for a different compound.

You will find this material specified across oilfield and downhole equipment, engine timing systems, and automotive air conditioning.

Reference part number HSN90320 when ordering; the item is sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.