*568-431 HSN90 DURO ORING

APG stocks the HSN90431, an AS568-431 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 5.225 in (132.72 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 5.775 in (146.69 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The material holds up against petroleum oils and fuels, heat and oxidation, and modern refrigerants. HNBR (Hydrogenated Nitrile) is specified for excellent abrasion and tear strength, 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 ketones or esters will shorten service life.

You will find this material specified across commercial refrigeration, automotive air conditioning, and engine timing systems.

Order part number HSN90431, sold individually. Nominal inside diameter is listed as 5 1/4 inch. Review your operating media and conditions against this specification before installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.